0000000000914867

AUTHOR

Yan Duan

showing 58 related works from this author

Spectroscopic analysis of vibronic relaxation pathways in molecular spin qubit [Ho(W5O18)2]9−: sparse spectra are key

2021

Molecular vibrations play a key role in magnetic relaxation processes of molecular spin qubits as they couple to spin states, leading to the loss of quantum information. Direct experimental determination of vibronic coupling is crucial to understand and control the spin dynamics of these nano-objects, which represent the limit of miniaturization for quantum devices. Herein, we measure the vibrational properties of the molecular spin qubit $[$Ho(W$_5$O$_{18}$)$_2]^{9-}$ by means of magneto-infrared spectroscopy. Our results allow us to unravel the vibrational decoherence pathways in combination with $ab$ $initio$ calculations including vibronic coupling. We observe field-induced spectral cha…

Coupling constantQuantum decoherenceSpin statesCondensed Matter - Mesoscale and Nanoscale PhysicsChemistryRelaxation (NMR)FOS: Physical sciences02 engineering and technologyVibració010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesMolecular physics3. Good health0104 chemical sciencesInorganic ChemistryVibronic couplingQubitMesoscale and Nanoscale Physics (cond-mat.mes-hall)CristallsPhysical and Theoretical ChemistryQuantum informationPhysics::Chemical Physics0210 nano-technologySpin-½
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Data-driven design of molecular nanomagnets

2022

AbstractThree decades of research in molecular nanomagnets have raised their magnetic memories from liquid helium to liquid nitrogen temperature thanks to a wise choice of the magnetic ion and coordination environment. Still, serendipity and chemical intuition played a main role. In order to establish a powerful framework for statistically driven chemical design, here we collected chemical and physical data for lanthanide-based nanomagnets, catalogued over 1400 published experiments, developed an interactive dashboard (SIMDAVIS) to visualise the dataset, and applied inferential statistical analysis. Our analysis shows that the Arrhenius energy barrier correlates unexpectedly well with the m…

MagneticsMultidisciplinaryTemperatureGeneral Physics and AstronomyQuímicaGeneral ChemistryLigandsLanthanoid Series ElementsGeneral Biochemistry Genetics and Molecular BiologyNature Communications
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A decacobalt(ii) cluster with triple-sandwich structure obtained by partial reductive hydrolysis of a pentacobalt(ii/iii) Weakley-type polyoxometalat…

2016

Partial reductive hydrolysis of a penta-CoII/III cluster [CoII4(H2O)2(CoIIIW9O34)(PW9O34)]12− (1) leads to the formation of [Co2{Co3(H2O)(Co(OH)2W7O26)(PW9O34)}2]22− (2). This polyoxometalate is made up of two capping [PW9O34]9− units and two bridging [W7O26]10− units that assemble to encapsulate a novel deca-CoII cluster core comprising octahedral and tetrahedral CoII ions.

010405 organic chemistryChemistryInorganic chemistryMetals and AlloysGeneral ChemistryType (model theory)010402 general chemistry01 natural sciencesCatalysis0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsHydrolysisCrystallographyOctahedronPolyoxometalateMaterials ChemistryCeramics and CompositesCluster (physics)Chemical communications (Cambridge, England)
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Enhancing coherence in molecular spin qubits via atomic clock transitions

2016

Quantum computing is an emerging area within the information sciences revolving around the concept of quantum bits (qubits). A major obstacle is the extreme fragility of these qubits due to interactions with their environment that destroy their quantumness. This phenomenon, known as decoherence, is of fundamental interest1,2. There are many competing candidates for qubits, including superconducting circuits3, quantum optical cavities4, ultracold atoms5 and spin qubits6,7,8, and each has its strengths and weaknesses. When dealing with spin qubits, the strongest source of decoherence is the magnetic dipolar interaction9. To minimize it, spins are typically diluted in a diamagnetic matrix. For…

PhysicsMultidisciplinaryCondensed matter physicsCluster stateUNESCO::QUÍMICASpin engineeringQuantum Physics02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences:QUÍMICA [UNESCO]0104 chemical sciencesQuantum error correctionQuantum mechanicsQuantum informationW state0210 nano-technologySuperconducting quantum computingQuantum dissipationQuantum computer
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Single ion magnets based on lanthanoid polyoxomolybdate complexes

2016

Polyoxometalate (POM) chemistry has recently offered excellent examples of single ion magnets (SIMs) and molecular spin qubits. Compared with conventional coordination compounds, POMs provide rigid and highly symmetric coordination sites. However, all POM-based SIMs reported to date exhibit a very limited range of possibilities for chemical processability. We present herein two new families of POM-based SIMs which are soluble in organic solvents: [Ln(β-Mo8O26)2]5− {LnIII = Tb, Dy, Ho, Er, Tm and Yb} and the functionalised POMs [Ln{Mo5O13(OMe)4NNC6H4-p-NO2}2]3− {LnIII = Tb, Dy, Ho, Er, Yb and Nd}. In addition, these two families represent the first SIMs based on polyoxomolybdates. A magneto-…

Lanthanidechemistry.chemical_classificationSingle ionChemistryUNESCO::QUÍMICAInorganic chemistry02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences:QUÍMICA [UNESCO]0104 chemical sciencesCoordination complexInorganic ChemistryCrystalCrystallographyMagnetPolyoxometalate[CHIM]Chemical Sciences0210 nano-technology
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Quantum coherent spin-electric control in a molecular nanomagnet at clock transitions

2020

Electrical control of spins at the nanoscale offers significant architectural advantages in spintronics, because electric fields can be confined over shorter length scales than magnetic fields1–5. Thus, recent demonstrations of electric-field sensitivities in molecular spin materials6–8 are tantalizing, raising the viability of the quantum analogues of macroscopic magneto-electric devices9–15. However, the electric-field sensitivities reported so far are rather weak, prompting the question of how to design molecules with stronger spin–electric couplings. Here we show that one path is to identify an energy scale in the spin spectrum that is associated with a structural degree of freedom with…

Quantum decoherenceGeneral Physics and AstronomyFOS: Physical sciences02 engineering and technology010402 general chemistry01 natural sciencesPhysics - Chemical PhysicsMesoscale and Nanoscale Physics (cond-mat.mes-hall)Spin (physics)MaterialsPhysicsChemical Physics (physics.chem-ph)Quantum PhysicsCondensed Matter - Mesoscale and Nanoscale PhysicsCondensed matter physicsSpintronicsSpinsQuàntums Teoria dels021001 nanoscience & nanotechnologyNanomagnet0104 chemical sciencesQuantum technologyDipoleQubit0210 nano-technologyQuantum Physics (quant-ph)
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Coherent manipulation of three-qubit states in a molecular single-ion magnet

2017

We study the quantum spin dynamics of nearly isotropic Gd3+ ions entrapped in polyoxometalate molecules and diluted in crystals of a diamagnetic Y3+ derivative. The full energy-level spectrum and the orientations of the magnetic anisotropy axes have been determined by means of continuous-wave electron paramagnetic resonance experiments, using X-band (9-10 GHz) cavities and on-chip superconducting waveguides and 1.5-GHz resonators. The results show that seven allowed transitions between the 2S+1 spin states can be separately addressed. Spin coherence T2 and spin-lattice relaxation T1 rates have been measured for each of these transitions in properly oriented single crystals. The results sugg…

PhysicsRabi cycleSpin statesSpinsRelaxation (NMR)010402 general chemistry01 natural sciences0104 chemical scienceslaw.inventionDipolelawQubit0103 physical sciencesAtomic physics010306 general physicsSpin (physics)Electron paramagnetic resonance
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Large Magnetic Polyoxometalates Containing the Cobalt Cubane ‘[CoIIICo3II(OH)3(H2O)6–m(PW9O34)]3− (m = 3 or 5) as a Subunit

2018

A synthetic procedure is presented to construct new magnetic polyoxometalates (POMs) containing one or two subunits of ‘[CoIIICo3II(OH)3(H2O)6−m(PW9O34)]3−' (m = 3 or 5). The substitution of the water ligands present in these subunits by oxo or hydroxo ligands belonging to other POM fragments, gives rise to four, larger POM anions: [Co7(OH)6(H2O)6(PW9O34)2]9− (2), [Co7(OH)6(H2O)4(PW9O34)2]n9n- (2′), [Co11(OH)5(H2O)5(W6O24)(PW9O34)3]22− (3) and [{Co4(OH)3(H2O)(PW9O34)}2{K⊂(H2W12O41)2}{Co(H2O)4}2]17− (4). The crystal structures, magnetic characterization and stabilities in aqueous solutions of these POM derivatives are also presented.

crystal structureAqueous solution010405 organic chemistryMagnetismProtein subunitchemistry.chemical_elementCrystal structureGeneral Chemistry010402 general chemistrycobalt01 natural sciences0104 chemical scienceslcsh:Chemistrychemistry.chemical_compoundCrystallographylcsh:QD1-999chemistryCubanemagnetismpolyoxometalatePolyoxometalatecubane clusterCobaltFrontiers in Chemistry
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Influence of the covalent grafting of organic radicals to graphene on its magnetoresistance

2013

Graphene was obtained by direct exfoliation of graphite in o-dichlorobenzene (oDCB) or benzylamine, and further functionalized with 4,4′-[(1,3-dioxo-1,3-propanediyl)bis(oxy)]bis[2,2,6,6-tetramethyl-1-piperidinyloxy] (1-TEMPO) organic radicals by using the Bingel–Hirsch cyclopropanation reaction. Here, the use of different solvents permits variation of the density of radicals anchored to the carbon layers. Covalent grafting is unambiguously demonstrated by TGA, μ-Raman, XPS and EPR measurements, which also rule out spurious physisorption. Our transport measurements indicate that the conduction mechanism varies as a function of the density of radicals grafted to the carbon layers. Moreover, t…

Materials scienceMagnetoresistanceGrapheneRadical02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnologyPhotochemistry01 natural sciencesExfoliation joint0104 chemical scienceslaw.inventionPhysisorptionCovalent bondlawMaterials ChemistryMoleculeOrganic chemistry0210 nano-technologyElectron paramagnetic resonanceJournal of Materials Chemistry C
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ChemInform Abstract: Cobalt Clusters with Cubane-Type Topologies Based on Trivacant Polyoxometalate Ligands.

2016

Four novel cobalt-substituted polyoxometalates having cobalt cores exhibiting cubane or dicubane topologies have been synthesized and characterized by IR, elemental analysis, electrochemistry, UV–vis spectroscopy, X-ray single-crystal analysis, and magnetic studies. The tetracobalt(II)-substituted polyoxometalate [Co4(OH)3(H2O)6(PW9O34)]4– (1) consists of a trilacunary [B-α-PW9O34]9– unit which accommodates a cubane-like {CoII4O4} core. In the heptacobalt(II,III)-containing polyoxometalates [Co7(OH)6(H2O)6(PW9O34)2]9– (2), [Co7(OH)6(H2O)4(PW9O34)2]n9n– (3), and [Co7(OH)6(H2O)6(P2W15O56)2]15– (4), dicubane-like {CoII6CoIIIO8} cores are encapsulated between two heptadentate [B-α-PW9O34]9– (in…

chemistry.chemical_compoundCrystallographychemistryCubanePolyoxometalatechemistry.chemical_elementGeneral MedicineType (model theory)ElectrochemistrySpectroscopyAlkali metalCobaltExchange modelChemInform
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Hydrogen-bonded networks of [Fe(bpp)2]2+spin crossover complexes and dicarboxylate anions: structural and photomagnetic properties

2016

The paper reports the syntheses, crystal structures, thermal and (photo)magnetic properties of spin crossover salts of formula [Fe(bpp)2](C6H8O4)·4H2O (1·4H2O), [Fe(bpp)2](C8H4O4)·2CH3OH·H2O (2·2MeOH·H2O) and [Fe(bpp)2](C8H4O4)·5H2O (2·5H2O) (bpp = 2,6-bis(pyrazol-3yl)pyridine; C6H8O4 = adipate dianion; C8H4O4 = terephthalate dianion). The salts exhibit an intricate network of hydrogen bonds between low-spin iron(II) complexes and carboxylate dianions, with solvent molecules sitting in the voids. Desolvation is accompanied by a low-spin (LS) to high-spin (HS) transformation in the materials. The dehydrated phase 2 undergoes a two-step transition with a second step showing thermal hysteresis…

010405 organic chemistryChemistryHydrogen bondInorganic chemistryCrystal structure010402 general chemistry01 natural sciencesLIESST0104 chemical sciencesInorganic Chemistrychemistry.chemical_compoundCrystallographySpin crossoverAdipatePyridineMoleculeCarboxylateDalton Trans.
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Light-induced decarboxylation in a photo-responsive iron-containing complex based on polyoxometalate and oxalato ligands.

2016

A new iron-oxalato polyoxometalate exhibits a remarkable photocoloration effect in the solid state based entirely on an intramolecular process.

LigandDecarboxylation02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnologyPhotochemistry01 natural sciencesOxalate0104 chemical scienceschemistry.chemical_compoundElectron transferChemistrychemistryIntramolecular forceMössbauer spectroscopyPolyoxometalate0210 nano-technologyDerivative (chemistry)Chemical science
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Magnetization Relaxation in a Three‐Dimensional Ligated Cobalt Phosphonate Containing Ferrimagnetic Chains

2010

chemistry.chemical_compoundMagnetizationCrystallographychemistryFerrimagnetismOrganic ChemistryInorganic chemistryRelaxation (physics)chemistry.chemical_elementGeneral ChemistryPhosphonateCobaltCatalysisChemistry – A European Journal
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Electron-nuclear decoupling at a spin clock transition

2023

The ability to design quantum systems that decouple from environmental noise sources is highly desirable for development of quantum technologies with optimal coherence. The chemical tunability of electronic states in magnetic molecules combined with advanced electron spin resonance techniques provides excellent opportunities to address this problem. Indeed, so-called clock transitions have been shown to protect molecular spin qubits from magnetic noise, giving rise to significantly enhanced coherence. Here we conduct a spectroscopic and computational investigation of this physics, focusing on the role of the nuclear bath. Away from the clock transition, linear coupling to the nuclear degree…

MagLabMolecular magnetMolecular spin qubitLanthanideUNESCO::QUÍMICAGeneral Physics and AstronomyEPRClock transitionNHMFLCommunications Physics
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A Ferroelectric Iron(II) Spin Crossover Material

2017

A dual-function material in which ferroelectricity and spin crossover coexist in the same temperature range has been obtained. Our synthetic strategy allows the construction of acentric crystal structures in a predictable way and is based on the high directionality of hydrogen bonds. The well-known iron(II) spin crossover complex [Fe(bpp)₂]²+ (bpp = 2,6-bis(pyrazol-3-yl)pyridine), a four-fold noncentrosymmetric H-bond donor, was combined with a disymmetric H-bond acceptor such as the isonicotinate (isonic) anion to afford [Fe(bpp)₂](isonic)₂·2H₂O. This low-spin iron(II) compound crystallises in the acentric nonpolar I-4 space group and shows piezoelectricity and SHG properties. Upon dehydra…

010405 organic chemistryChemistryHydrogen bondInorganic chemistryGeneral MedicineGeneral ChemistryCrystal structure010402 general chemistry01 natural sciencesAcceptorFerroelectricityCatalysis0104 chemical sciencesCrystallographySpin crossoverPhase (matter)Acentric factorMonoclinic crystal systemAngewandte Chemie International Edition
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Data mining, dashboards and statistics: a powerful framework for the chemical design of molecular nanomagnets

2021

Abstract Three decades of intensive research in molecular nanomagnets have brought the magnetic memory in molecules from liquid helium to liquid nitrogen temperature. The enhancement of this operational temperature relies on a wise choice of the magnetic ion and the coordination environment. However, serendipity, oversimplified theories and chemical intuition have played the main role. In order to establish a powerful framework for statistically driven chemical design, we collected chemical and physical data for lanthanide-based nanomagnets to create a catalogue of over 1400 published experiments, developed an interactive dashboard (SIMDAVIS) to visualise the dataset, and applied inferentia…

Arrhenius equationPhysicsMolecular nanomagnetsLiquid heliumDashboard (business)chemistry.chemical_elementNanomagnetlaw.inventionsymbols.namesakechemistrylawsymbolsDysprosiumMoleculeStatistical physicsChemical design
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Construction of a General Library for the Rational Design of Nanomagnets and Spin Qubits Based on Mononuclear f-Block Complexes. The Polyoxometalate …

2014

This paper belongs to a series of contributions aiming at establishing a general library that helps in the description of the crystal field (CF) effect of any ligand on the splitting of the J ground states of mononuclear f-element complexes. Here, the effective parameters associated with the oxo ligands (effective charges and metal-ligand distances) are extracted from the study of the magnetic properties of the first two families of single-ion magnets based on lanthanoid polyoxometalates (POMs), formulated as [Ln(W5O18)2](9-) and [Ln(β2-SiW11O39)2](13-) (Ln = Tb, Dy, Ho, Er, Tm, Yb). This effective CF approach provides a good description of the lowest-lying magnetic levels and the associate…

Inorganic ChemistryLanthanideCrystallographyField (physics)ChemistryStereochemistryLigandPolyoxometalatePhysical and Theoretical ChemistryBlock (periodic table)Wave functionSpin (physics)NanomagnetInorganic Chemistry
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Synthesis, crystal structures and magnetic properties of picolinate-bridged copper(II) chains

2018

The paper reports the synthesis, crystal structures, and magnetic properties of two copper(II) coordination polymers, Cu2(L1)4 (1) and Cu3(L2)6 (2), based on rigid ethynylene-bridged ditopic ligands containing one picolinate subunit (L1 = 5-(pyridin-3-ylethynyl)picolinate anion; L2 = 5-((4-(methoxycarbonyl)phenyl)ethynyl)picolinate anion). Both 1 and 2 have a chain structure. In 1, the repeating unit in the chain is a doubly bridged picolinate dicopper(II) complex, whereas 2 is built upon trimeric units where the Cu2+ ions are also connected by double picolinate bridges. Both compounds exhibit antiferromagnetic interactions in the solid state. The magnetic properties of 1 and 2 were analyze…

010405 organic chemistryDimerIntermolecular forcechemistry.chemical_elementTrimerCrystal structure010402 general chemistry01 natural sciencesCopper0104 chemical sciencesIonchemistry.chemical_compoundCrystallographychemistryMaterials ChemistryAntiferromagnetismMetal-organic frameworkPhysical and Theoretical Chemistry
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Vibronic Relaxation Pathways in Molecular Spin Qubit Na9[Ho(W5O18)2]·35H2O under Pressure

2023

In order to explore how spectral sparsity and vibronic decoherence pathways can be controlled in a model qubit system with atomic clock transitions, we combined diamond anvil cell techniques with synchrotron-based far infrared spectroscopy and first-principles calculations to reveal the vibrational response of Na9[Ho(W5O18)2]·35H2O under compression. Because the hole in the phonon density of states acts to reduce the overlap between the phonons and f manifold excitations in this system, we postulated that pressure might move the HoO4 rocking, bending, and asymmetric stretching modes that couple with the MJ = ±5, ±2, and ±7 levels out of resonance, reducing their …

Chemistry (miscellaneous)strategies to minimize decoherenceMaterials Chemistryspin qubithigh pressure vibrational spectroscopyQuímicaVibracióvibronic couplingElectronic Optical and Magnetic MaterialsMagnetochemistry
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Rational Design of Lanthanoid Single-Ion Magnets: Predictive Power of the Theoretical Models

2016

We report two new single‐ion magnets (SIMs) of a family of oxydiacetate lanthanide complexes with D3 symmetry to test the predictive capabilities of complete active space ab initio methods (CASSCF and CASPT2) and the semiempirical radial effective charge (REC) model. Comparison of the theoretical predictions of the energy levels, wave functions and magnetic properties with detailed spectroscopic and magnetic characterisation is used to critically discuss the limitations of these theoretical approaches. The need for spectroscopic information for a reliable description of the properties of lanthanide SIMs is emphasised. SPINMOL ERC-CoG-647301 DECRESIM MAT2014-56143-R CTQ2014-52758-P CTQ2011-2…

LanthanideElectronic structureUNESCO::QUÍMICAAb initioEstructura electrònicaElectronic structure010402 general chemistry01 natural sciences:QUÍMICA [UNESCO]CatalysisEffective nuclear chargeComputational chemistryRare earthsComplete active spaceWave function010405 organic chemistryChemistryOrganic ChemistryGeneral ChemistrySymmetry (physics)Terres rares0104 chemical sciencesImantsMagnetMagnetsAtomic physics
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Cobalt Clusters with Cubane-Type Topologies Based on Trivacant Polyoxometalate Ligands.

2016

Four novel cobalt-substituted polyoxometalates having cobalt cores exhibiting cubane or dicubane topologies have been synthesized and characterized by IR, elemental analysis, electrochemistry, UV-vis spectroscopy, X-ray single-crystal analysis, and magnetic studies. The tetracobalt(II)-substituted polyoxometalate [Co4(OH)3(H2O)6(PW9O34)](4-) (1) consists of a trilacunary [B-α-PW9O34](9-) unit which accommodates a cubane-like {Co(II)4O4} core. In the heptacobalt(II,III)-containing polyoxometalates [Co7(OH)6(H2O)6(PW9O34)2](9-) (2), [Co7(OH)6(H2O)4(PW9O34)2]n(9n-) (3), and [Co7(OH)6(H2O)6(P2W15O56)2](15-) (4), dicubane-like {Co(II)6Co(III)O8} cores are encapsulated between two heptadentate [B…

010405 organic chemistrychemistry.chemical_elementNanotechnologyType (model theory)010402 general chemistryElectrochemistry01 natural sciences0104 chemical sciencesInorganic Chemistrychemistry.chemical_compoundCrystallographychemistryCubanePolyoxometalatePhysical and Theoretical ChemistrySpectroscopyCobaltExchange modelInorganic chemistry
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Data mining, dashboard and statistical analysis: a powerful framework for the chemical design of molecular nanomagnets

2021

Three decades of research in molecular nanomagnets have raised their magnetic memories from liquid helium to liquid nitrogen temperature thanks to a wise choice of the magnetic ion and coordination environment. Still, serendipity and chemical intuition played a main role. In order to establish a powerful framework for statistically driven chemical design, we collected chemical and physical data for lanthanide-based nanomagnets, catalogued over 1400 published experiments, developed an interactive dashboard (SIMDAVIS) to visualise the dataset, and applied inferential statistical analysis. Our analysis showed that the Arrhenius energy barrier correlates unexpectedly well with the magnetic memo…

Condensed Matter - Mesoscale and Nanoscale PhysicsMesoscale and Nanoscale Physics (cond-mat.mes-hall)FOS: Physical sciences
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Visible-Light Water Oxidation by a Polyoxometalate Complexed 275 Iron-Atom Hematite Core

2019

Although metal-oxide nanocrystals are often highly active, rapid aggregation (particularly in water) generally precludes detailed solution-state investigation of their catalytic reactions. This is equally true for visible-light driven water oxidation by hematite α-Fe2O3 nanocrystals, that bridge a conceptual divide between molecular complexes of iron and solid-state hematite photoanodes. We now report that the aqueous solubility and remarkable stability of polyoxometalate- (POM-) complexed 275 iron-atom hematite cores make it possible to investigate visible-light driven water oxidation at this frontier area using the versatile toolbox of solution-state methods typically reserved for molecul…

Química
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The use of polyoxometalates for the design of high-nuclearity magnetic clusters, single-ion magnets and photo-responsive materials

2017

Resumen en español A continuación, se describe la estructura de la tesis y se detallan los aspectos más relevantes tratados en cada uno de los capítulos de la presente disertación. En el Capítulo 1 se presenta una breve introducción histórica sobre los POMs y una descripción detallada de los aspectos más relevantes de la síntesis, estructuras, propiedades y aplicaciones de los POMs. Los resultados se han estructurado en tres capítulos (Capítulo 2, Capítulo 3 y Capítulo 4). En el Capítulo 2 se discute la síntesis y caracterización de diez nuevos polioxometalatos sustituidos con cobalto. Este capítulo ofrece una visión profunda de los detalles experimentales de la síntesis y caracterización d…

magneticUNESCO::QUÍMICApolyoxometalate:QUÍMICA [UNESCO]
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Three addressable spin qubits in a molecular single-ion magnet

2016

We show that several qubits can be integrated in a single magnetic ion, using its internal electronic spin states with energies tuned by a suitably chosen molecular environment. This approach is illustrated with a nearly-isotropic Gd(III) ion entrapped in a polyoxometalate molecule. Experiments with microwave technologies, either three dimensional cavities or quantum superconducting circuits, show that this magnetic molecule possesses the number of spin states and the set of coherently addressable transitions connecting these states that are needed to perform a universal three-qubit processor or, equivalently, a d=8-level 'qudit'. Our findings open prospects for developing more sophisticate…

Condensed Matter - Materials ScienceQuantum PhysicsMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesQuantum Physics (quant-ph)
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Three addressable spin qubits in a GdW30 single-ion magnet

2017

Resumen del trabajo presentado a la XXXVI Reunión Bienal de la Real Sociedad Española de Física, celebrada en Santiago de Compostela del 17 al 21 de julio de 2017.

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Optimal coupling of HoW$_{10}$ molecular magnets to superconducting circuits near spin clock transitions

2019

A central goal in quantum technologies is to maximize $G$T$_{2}$, where $G$ stands for the coupling of a qubit to control and readout signals and T$_{2}$ is the qubit's coherence time. This is challenging, as increasing $G$ (e.g. by coupling the qubit more strongly to external stimuli) often leads to deleterious effects on T$_{2}$. Here, we study the coupling of pure and magnetically diluted crystals of HoW$_{10}$ magnetic clusters to microwave superconducting coplanar waveguides. Absorption lines give a broadband picture of the magnetic energy level scheme and, in particular, confirm the existence of level anticrossings at equidistant magnetic fields determined by the combination of crysta…

Quantum PhysicsCondensed Matter - Mesoscale and Nanoscale PhysicsMesoscale and Nanoscale Physics (cond-mat.mes-hall)FOS: Physical sciencesQuantum Physics (quant-ph)
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CCDC 1577301: Experimental Crystal Structure Determination

2018

Related Article: Verónica Jornet-Mollá, Carlos Martín-Mezquita, Yan Duan, Carlos Giménez-Saiz, Francisco M. Romero|2018|J.Coord.Chem.|71|644|doi:10.1080/00958972.2018.1437267

Space GroupCrystallographycatena-[tetrakis(mu-5-{[4-(methoxycarbonyl)phenyl]ethynyl}pyridine-2-carboxylato)-bis(5-{[4-(methoxycarbonyl)phenyl]ethynyl}pyridine-2-carboxylato)-tri-copper(ii)]Crystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1491308: Experimental Crystal Structure Determination

2016

Related Article: Verónica Jornet-Mollá, Yan Duan, Carlos Giménez-Saiz, João C. Waerenborgh, Francisco M. Romero|2016|Dalton Trans.|45|17918|doi:10.1039/C6DT02934E

bis(26-bis(1H-pyrazol-3-yl)pyridine)-iron terephthalate methanol solvate monohydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1555238: Experimental Crystal Structure Determination

2017

Related Article: Verónica Jornet-Mollá, Yan Duan, Carlos Gimenez-Saiz, Yuan-Yuan Tang, Peng-Fei Li, Francisco M. Romero, Ren-Gen Xiong|2017|Angew.Chem.,Int.Ed.|56|14052|doi:10.1002/anie.201707401

Space GroupCrystallographyCrystal Systembis(26-bis(1H-pyrazol-3-yl)pyridine)-iron(ii) bis(pyridine-4-carboxylate) dihydrateCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 766166: Experimental Crystal Structure Determination

2011

Related Article: Peng-Fei Wang, Yan Duan, J.M.Clemente-Juan, You Song, Kang Qian, Song Gao, Li-Min Zheng|2011|Chem.-Eur.J.|17|3579|doi:10.1002/chem.201002348

Space GroupCrystallographycatena-(bis(mu5-6-phosphonatopyridine-3-carboxylato)-(mu2-11'-(14-phenylenebis(methylene))bis(1H-imidazole))-diaqua-tri-cobalt(ii))Crystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CSD 2036360: Experimental Crystal Structure Determination

2021

Related Article: Junjie Liu, Jakub Mrozek, Aman Ullah, Yan Duan, Jos�� J. Baldov��, Eugenio Coronado, Alejandro Gaita-Ari��o, Arzhang Ardavan|2021|Nat.Phys.|17|1205|doi:10.1038/s41567-021-01355-4

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1446096: Experimental Crystal Structure Determination

2016

Related Article: José J. Baldoví, Yan Duan, Carlos Bustos, Salvador Cardona-Serra, Pierre Gouzerh, Richard Villanneau, Geoffrey Gontard, Juan M. Clemente-Juan, Alejandro Gaita-Ariño, Carlos Giménez-Saiz, Anna Proust, Eugenio Coronado|2016|Dalton Trans.|45|16653|doi:10.1039/C6DT02258H

pentakis(tetra-n-butylammonium) dotriacontakis(mu-oxido)-icosaoxo-hexadeca-molybdenum-thulium acetonitrile solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1491307: Experimental Crystal Structure Determination

2016

Related Article: Verónica Jornet-Mollá, Yan Duan, Carlos Giménez-Saiz, João C. Waerenborgh, Francisco M. Romero|2016|Dalton Trans.|45|17918|doi:10.1039/C6DT02934E

bis(26-bis(1H-pyrazol-3-yl)-pyridine)-iron hexanedioate tetrahydrateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CSD 1790045: Experimental Crystal Structure Determination

2017

Related Article: Yan Duan, João C. Waerenborgh, Juan M. Clemente-Juan, Carlos Giménez-Saiz, Eugenio Coronado|2017|Chemical Science|8|305|doi:10.1039/C6SC01919F

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1538254: Experimental Crystal Structure Determination

2018

Related Article: Yan Duan, Juan M. Clemente-Juan, Carlos Giménez-Saiz, Eugenio Coronado|2018|Frontiers in Chemistry|6|231|doi:10.3389/fchem.2018.00231

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinatescatena-[dodeca-potassium tetreadeca-sodium tris(mu-phosphato)-octakis(mu-hydroxo)-henoctacontakis(mu-oxo)-trideca-aqua-triacontaoxo-trideca-cobalt-tritriaconta-tungsten pentatriacontahydrate]
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CCDC 1482838: Experimental Crystal Structure Determination

2016

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Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinatestris(tetra-n-butylammonium) octadecakis(mu-oxido)-octakis(mu-methoxo)-bis((4-nitrophenyl)diazene)-octaoxo-deca-molybdenum-terbium chloroform solvate
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CCDC 1446095: Experimental Crystal Structure Determination

2016

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Space GroupCrystallographypentakis(tetra-n-butylammonium) dotriacontakis(mu-oxido)-icosaoxo-hexadeca-molybdenum-erbium acetonitrile solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1482841: Experimental Crystal Structure Determination

2016

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Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameterstris(tetra-n-butylammonium) octadecakis(mu-oxido)-octakis(mu-methoxo)-bis((4-nitrophenyl)diazene)-octaoxo-erbium-deca-molybdenum tetrahydrofuran solvateExperimental 3D Coordinates
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CSD 2036359: Experimental Crystal Structure Determination

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Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1482842: Experimental Crystal Structure Determination

2016

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Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameterstris(tetra-n-butylammonium) octadecakis(mu-oxido)-octakis(mu-methoxo)-bis((4-nitrophenyl)diazene)-octaoxo-ytterbium-deca-molybdenum chloroform solvateExperimental 3D Coordinates
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CCDC 1577302: Experimental Crystal Structure Determination

2018

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bis[26-bis(1H-pyrazol-3-yl)pyridine]-iron bis(pyridine-4-carboxylate)Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1538255: Experimental Crystal Structure Determination

2018

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Space GroupCrystallographyCrystal SystemCrystal Structuresodium trideca-potassium bis(mu-aqua)-octa-deca-di-cobalt(ii) bis(mu-phosphato)-decakis(mu-hydroxo)-hexanonacontakis(mu-oxo)-deca-aqua-dotetracontaoxo-di-cobalt(iii)-octa-cobalt(ii)-dotetraconta-tungsten hydrateCell ParametersExperimental 3D Coordinates
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CCDC 1446094: Experimental Crystal Structure Determination

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Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameterspentakis(tetra-n-butylammonium) dotriacontakis(mu-oxido)-icosaoxo-hexadeca-molybdenum-holmium acetonitrile solvateExperimental 3D Coordinates
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CCDC 1491309: Experimental Crystal Structure Determination

2016

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Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersbis(26-bis(1H-pyrazol-3-yl)-pyridine)-iron terephthalate pentahydrateExperimental 3D Coordinates
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CSD 2036358: Experimental Crystal Structure Determination

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Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1446097: Experimental Crystal Structure Determination

2016

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CCDC 1482839: Experimental Crystal Structure Determination

2016

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tris(tetra-n-butylammonium) octadecakis(mu-oxido)-octakis(mu-methoxo)-bis((4-nitrophenyl)diazene)-octaoxo-deca-molybdenum-dysprosium chloroform solvateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1577300: Experimental Crystal Structure Determination

2018

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Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameterscatena-[bis(mu-5-[(pyridin-3-yl)ethynyl]pyridine-2-carboxylato)-copper(ii)]Experimental 3D Coordinates
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CCDC 1554603: Experimental Crystal Structure Determination

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CCDC 1482840: Experimental Crystal Structure Determination

2016

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CCDC 1446093: Experimental Crystal Structure Determination

2016

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Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameterspentakis(tetra-n-butylammonium) dotriacontakis(mu-oxido)-icosaoxo-hexadeca-molybdenum-dysprosium acetonitrile solvateExperimental 3D Coordinates
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CCDC 1446092: Experimental Crystal Structure Determination

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Data supporting the related publication.

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2018

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