0000000000219439

AUTHOR

Denis V. Korchagin

0000-0002-0199-1382

showing 7 related works from this author

Can the Double Exchange Cause Antiferromagnetic Spin Alignment?

2020

The effect of the double exchange in a square-planar mixed-valence dn+1&minus

PhysicsCondensed matter physicsSpinsdouble exchangeElectrontetrameric mixed valence clusterselectron transferAntiparallel (biochemistry)Polarization (waves)Electronic Optical and Magnetic Materialslcsh:ChemistryCondensed Matter::Materials ScienceDelocalized electronlcsh:QD1-999FerromagnetismChemistry (miscellaneous)Materials Chemistrymixed-valenceAntiferromagnetismCondensed Matter::Strongly Correlated Electronsquantum cellular automatamagnetic exchangeSpin-½Magnetochemistry
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Insight Into The Spin-Vibronic Problem of a Mixed Valence Magnetic Molecular Cell for Quantum Cellular Automata.

2021

The effects of the vibronic coupling in quantum cellular automata (QCA) based on the square planar mixed valence (MV) molecular cells comprising four paramagnetic centers (spin cores) and two excess mobile electrons are analyzed in the important particular case when the Coulomb energy gap between the ground antipodal diagonal-type two-electron configurations and the excited side-type configurations considerably exceeds both the one-electron transfer parameter (strong U-limit) and the vibronic stabilization energy. Under such conditions the developed model involves the second-order double exchange, the Heisenberg-Dirac-Van Vleck (HDVV) exchange and the vibronic coupling of the excess electro…

PhysicsValence (chemistry)Exchange interactionElectronMolecular physicsAtomic and Molecular Physics and OpticsElectron transferVibronic couplingExcited statePhysical and Theoretical ChemistryFisicoquímicaQuantum cellular automatonSpin-½Chemphyschem : a European journal of chemical physics and physical chemistry
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Purely Spectroscopic Determination of the Spin Hamiltonian Parameters in High-Spin Six-Coordinated Cobalt(II) Complexes with Large Zero-Field Splitti…

2019

Accurate determination of the spin Hamiltonian parameters in transition-metal complexes with large zero-field splitting (ZFS) is an actual challenge in studying magnetic and spectroscopic properties of high-spin transition metal complexes. Recent critical papers have convincingly shown that previous determinations of these parameters, based only on the magnetic data, have low accuracy and reliability. A combination of X-band electron paramagnetic resonance (EPR) spectroscopy and SQUID magnetometry seems to be a more convincing and accurate approach. However, even in this case, the accuracy of the determination of the spin Hamiltonian parameters is strongly limited. In this work, we propose …

ChemistryMagnetometerZero field splittingMolecular physicsSpectral linelaw.inventionInorganic ChemistrySQUIDTransition metallawPhysical and Theoretical ChemistryElectron paramagnetic resonanceSpectroscopySpin-½Inorganic chemistry
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Electric Field Control of Spin States in Trigonal Two-Electron Quantum Dot Arrays and Mixed-Valence Molecules: II. Vibronic Problem

2018

In this article, the vibronic model for an electric field switchable mixed-valence trimer containing two delocalized electrons or holes is proposed and examined. The role of the vibronic coupling on the electric field effects is analyzed by means of the semiclassical adiabatic approach and, alternatively, with the aid of the numerical analysis of the Schrodinger equation with due allowance for the kinetic energy of the ions (dynamic problem). The adiabatic potential landscapes have been calculated by taking into account the influence of the electric field. As the adiabatic approximation has a limited frame of validity, the study of the electric field effects has also been performed within m…

PhysicsSpin states02 engineering and technologyElectron010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesMolecular physics0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsSchrödinger equationAdiabatic theoremsymbols.namesakeDelocalized electronVibronic couplingGeneral EnergyElectric fieldPhysics::Atomic and Molecular ClusterssymbolsPhysical and Theoretical Chemistry0210 nano-technologyAdiabatic processThe Journal of Physical Chemistry C
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Mixed-Valence Magnetic Molecular Cell for Quantum Cellular Automata: Prospects of Designing Multifunctional Devices through Exploration of Double Exc…

2020

In this article, we propose to use multielectron square-planar mixed-valence (MV) molecules as molecular cells for quantum cellular automata (QCA) devices. As distinguished from previous proposals ...

PhysicsValence (chemistry)02 engineering and technologyNonlinear Sciences::Cellular Automata and Lattice Gases010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsGeneral EnergyChemical physicsPhysics::Atomic and Molecular ClustersMoleculePhysics::Chemical PhysicsPhysical and Theoretical Chemistry0210 nano-technologyQuantum cellular automatonThe Journal of Physical Chemistry C
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Vibronic recovering of functionality of quantum cellular automata based on bi-dimeric square cells with violated condition of strong Coulomb repulsio…

2022

Strong Coulomb repulsion between the two charges in a square planar mixed-valence cell in quantum cellular automata (QCA) allows us to encode the binary information in the two energetically beneficial diagonal distributions of the electronic density. In this article, we pose a question: to what extent is this condition obligatory for the design of the molecular cell? To answer this question, we examine the ability to use a square-planar cell composed of one-electron mixed valence dimers to function in QCA in a general case when the intracell Coulomb interaction U is not supposed to be extremely strong, which means that it is comparable with the characteristic electron transfer energy (viol…

General Physics and AstronomyQuímicaPhysical and Theoretical ChemistryCiènciaThe Journal of chemical physics
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CCDC 1911055: Experimental Crystal Structure Determination

2019

Related Article: Eugenii Ya. Misochko, Alexander V. Akimov, Denis V. Korchagin, Joscha Nehrkorn, Mykhaylo Ozerov, Andrew V. Palii, Juan Modesto Clemente-Juan, Sergey M. Aldoshin|2019|Inorg.Chem.|58|16434|doi:10.1021/acs.inorgchem.9b02195

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersbis(111555-hexafluoropentane-24-dionato)-(22'-bipyridine)-cobaltExperimental 3D Coordinates
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