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相关论文: Why graphene conductivity is constant: scaling the…

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The peculiar nature of electron scattering in graphene is among many exciting theoretical predictions for the physical properties of this material. To investigate electron scattering properties in a graphene plane, we have created a…

介观与纳米尺度物理 · 物理学 2007-06-19 B. Huard , J. A. Sulpizio , N. Stander , K. Todd , B. Yang , D. Goldhaber-Gordon

In this letter we study thermal conduction in mass-graded graphene flakes by nonequilibrium molecular dynamics simulations. It is found that mass-graded graphene flakes reveal no thermal rectification effect in thermal conduction process.…

材料科学 · 物理学 2011-09-15 Jigger Cheh , Hong Zhao

On the basis of the Kubo formula we evaluated the optical conductivity of a graphene sheet. The full behavior of frequency as well as temperature dependence of the optical conductivity is presented. We show that the anisotropy of…

介观与纳米尺度物理 · 物理学 2008-10-07 Chao Zhang , Lei Chen , Zhongshui Ma

We investigate the temperature dependence of the conductivity in ballistic graphene using Landauer transport theory. We obtain results which are qualitatively in agreement with many features recently observed in transport measurements on…

介观与纳米尺度物理 · 物理学 2009-11-12 Markus Mueller , Matthias Braeuninger , Bjoern Trauzettel

We show that the low temperature electron transport properties of chemically functionalized graphene can be explained as sequential tunneling of charges through a two dimensional array of graphene quantum dots (GQD). Below 15 K, a total…

介观与纳米尺度物理 · 物理学 2015-05-20 Daeha Joung , Lei Zhai , Saiful I. Khondaker

We study the scattering of graphene quasiparticles by topological defects, represented by holes, pentagons and heptagons. For holes, we found that at low concentration they give a negligible contribution to the resistivity. Whenever…

强关联电子 · 物理学 2011-08-05 J. M. Fonseca , W. A. Moura-Melo , A. R. Pereira

The electronic and transport properties of aluminum-graphene composite materials were investigated using ab initio plane wave density functional theory. The interfacial structure is reported for several configurations. In some cases, the…

材料科学 · 物理学 2024-02-12 K. Nepal , C. Ugwumadu , K. N. Subedi , K. Kappagantula , D. A. Drabold

Heating of carriers in an intrinsic graphene under dc electric field is considered taking into account the intraband energy relaxation due to acoustic phonon scattering and the interband generation-recombination transitions due to thermal…

介观与纳米尺度物理 · 物理学 2015-05-13 O. G. Balev , F. T. Vasko , V. Ryzhii

Electrical transport in graphene offers a fascinating parallel to spin transport in semiconductors including the spin-Hall effect. In the weak momentum scattering regime the steady-state density matrix contains two contributions, one linear…

介观与纳米尺度物理 · 物理学 2009-11-13 Dimitrie Culcer , R. Winkler

We argue that the unscreened Coulomb interaction in graphene provides a positive, universal, and logarithmic correction to scaling of zero-temperature conductivity with frequency. The combined effect of the disorder due to wrinkling of the…

介观与纳米尺度物理 · 物理学 2008-01-28 Igor F. Herbut , Vladimir Juricic , Oskar Vafek

We address the in-plane pressure-dependent electrodynamics of graphite through synchrotron based infrared spectroscopy and ab initio Density Functional Theory calculations. The Drude term remarkably increases upon pressure application, as a…

材料科学 · 物理学 2012-07-12 A. Perucchi , L. Baldassarre , C. Marini , P. Postorino , F. Bernardini , S. Massidda , S. Lupi

Local laser excitation and temperature readout from the intensity ratio of Stokes to anti-Stokes Raman scattering signals are employed to study the thermal properties of a large graphene membrane. The concluded value of the heat…

介观与纳米尺度物理 · 物理学 2010-05-24 C. Faugeras , B. Faugeras , M. Orlita , M. Potemski , R. R. Nair , A. K. Geim

We examine an intrinsic graphene connected to the phonon thermostat at temperature T under irradiation of thermal photons with temperature T_r, other than T. The distribution of nonequilibrium electron-hole pairs was obtained for the cases…

材料科学 · 物理学 2010-06-29 P. N. Romanets , F. T. Vasko , M. V. Strikha

We study the superconducting phase transition, both in a graphene bilayer and in graphite. For that purpose we derive the mean-field effective potential for a stack of graphene layers presenting hopping between adjacent sheets. For…

超导电性 · 物理学 2020-10-05 Lizardo H. C. M. Nunes , E. C. Marino , A. L. Mota

Applying to graphene oxides, molecular theory of graphene is based on the oxide molecular origin when it is considered as a final product in the succession of a graphene molecule polyderivatives related to a particular oxidation reaction.…

材料科学 · 物理学 2017-09-13 Elena F. Sheka , Nadezhda A. Popova

Graphene and other two-dimensional materials display remarkable optical properties, including a simple light transparency of $T \approx 1 - \pi \alpha$ for light in the visible region. Most theoretical rationalizations of this "universal"…

介观与纳米尺度物理 · 物理学 2016-12-07 Daniel J. Merthe , Vitaly V. Kresin

The linear dispersion relation in graphene[1,2] gives rise to a surprising prediction: the resistivity due to isotropic scatterers (e.g. white-noise disorder[3] or phonons[4-8]) is independent of carrier density n. Here we show that…

材料科学 · 物理学 2008-04-14 J. H. Chen , C. Jang , S. Xiao , M. Ishigami , M. S. Fuhrer

Graphitic nitrogen-doped graphene is an excellent platform to study scattering processes of massless Dirac fermions by charged impurities, in which high mobility can be preserved due to the absence of lattice defects through direct…

介观与纳米尺度物理 · 物理学 2017-06-05 Jiayu Li , Li Lin , Dingran Rui , Qiucheng Li , Jincan Zhang , Ning Kang , Yanfeng Zhang , Hailin Peng , Zhongfan Liu , H. Q. Xu

The conductance of graphene subject to a strong, tilted magnetic field exhibits a dramatic change from insulating to conducting behavior with tilt-angle, regarded as evidence for the transition from a canted antiferromagnetic (CAF) to a…

强关联电子 · 物理学 2016-03-30 Pavel Tikhonov , Efrat Shimshoni , H. A. Fertig , Ganpathy Murthy

The analysis of Current-voltage characteristic and Ampere-Gauss characteristic for graphene with Hubbard interaction was carried out depending on frequency of external variable field and magnetic field. The regions of the absolute negative…

介观与纳米尺度物理 · 物理学 2010-03-16 Mikhail Belonenko , Nikolay Lebedev , Masgut Shakirzyanov , Natalia Yanyushkina