0000000000109721

AUTHOR

Marco Polini

showing 4 related works from this author

The ultrafast dynamics and conductivity of photoexcited graphene at different Fermi energies

2017

The ultrafast dynamics and conductivity of photoexcited graphene can be explained using solely electronic effects.

Materials SciencePhysics::OpticsFOS: Physical sciences02 engineering and technology01 natural sciences7. Clean energylaw.inventionCondensed Matter::Materials ScienceElectrical resistivity and conductivitylawMesoscale and Nanoscale Physics (cond-mat.mes-hall)0103 physical sciencesPhysics::Atomic and Molecular ClustersPhysics::Chemical Physics010306 general physicsComputer Science::DatabasesResearch ArticlesPhysicsMultidisciplinaryCondensed Matter - Mesoscale and Nanoscale PhysicsCondensed matter physicsScatteringGraphenePhotoconductivitygraphene ultrafast carrier dynamicSciAdv r-articlesFermi energyPhysik (inkl. Astronomie)Condensed Matter Physics021001 nanoscience & nanotechnologyBoltzmann equation3. Good healthPhotoexcitationMultiple exciton generation0210 nano-technologyResearch ArticleScience Advances
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Fulde-Ferrell-Larkin-Ovchinnikov pairing in one-dimensional optical lattices

2008

Spin-polarized attractive Fermi gases in one-dimensional (1D) optical lattices are expected to be remarkably good candidates for the observation of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase. We model these systems with an attractive Hubbard model with population imbalance. By means of the density-matrix renormalization-group method, we compute the pairing correlations as well as the static spin and charge structure factors in the whole range from weak to strong coupling. We demonstrate that pairing correlations exhibit quasi-long-range order and oscillations at the wave number expected from the FFLO theory. However, we also show by numerically computing the mixed spin-charge static …

Condensed Matter::Quantum GasesDensity matrixPhysicseducation.field_of_studyHubbard modelCondensed matter physicsLattice field theoryPopulationCondensed Matter Physics01 natural sciences010305 fluids & plasmasElectronic Optical and Magnetic MaterialsATOMSRenormalizationPairingQuantum mechanicsTONKS-GIRARDEAU GAS0103 physical sciencesTHEOREMATTRACTIVE HUBBARD-MODEL010306 general physicsFermi gasStructure factoreducationPhysical Review B
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A stable path to ferromagnetic hydrogenated graphene growth

2014

In this paper, we propose a practical way to stabilize half-hydrogenated graphene (graphone). We show that the dipole moments induced by an hexagonal-boron nitride (h-BN) substrate on graphene stabilize the hydrogen atoms on one sublattice of the graphene layer and suppress the migration of the absorbed hydrogen atoms. Based upon first principle spin polarized density of states (DOS) calculations, we show that the half hydrogenated graphene (graphone) obtained in different graphene-h-BN heterostructures exhibits a half metallic state. We propose to use this new exotic material for spin valve and other spintronics devices and applications.

Materials scienceSpintronicsCondensed matter physicsCondensed Matter - Mesoscale and Nanoscale PhysicsGrapheneCondensed Matter::OtherSpin valveFOS: Physical sciencesPhysics::OpticsHEXAGONAL BORON-NITRIDE; GRAPHONENitrideCondensed Matter PhysicsElectronic Optical and Magnetic Materialslaw.inventionDipoleCondensed Matter::Materials SciencelawMesoscale and Nanoscale Physics (cond-mat.mes-hall)Density of statesPhysics::Atomic and Molecular ClustersPhysics::Atomic PhysicsBilayer grapheneGraphene nanoribbons
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Fulde-Ferrell-Larkin-Ovchinnikov superfluidity in one-dimensional optical lattices

2007

Spin-polarized attractive Fermi gases in one-dimensional (1D) optical lattices are expected to be remarkably good candidates for the observation of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase. We model these systems with an attractive Hubbard model with population imbalance. By means of the density-matrix renormalization-group method we compute the pairing correlations as well as the static spin and charge structure factors in the whole range from weak to strong coupling. We demonstrate that pairing correlations exhibit quasi-long range order and oscillations at the wave number expected from FFLO theory. However, we also show by numerically computing the mixed spin-charge static struc…

Condensed Matter::Quantum GasesSuperconductivity (cond-mat.supr-con)Condensed Matter - Strongly Correlated ElectronsStrongly Correlated Electrons (cond-mat.str-el)Condensed Matter - SuperconductivityFOS: Physical sciences
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