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In their work, Yan et al. [Phys. Rev. B 88, 121403 (2013)] employing density functional perturbation theory (DFPT) calculations, demonstrate that silicene and germanene show weaker Kohn anomalies in the $\Gamma$-$E_g$ and $K$-$A_1$ phonon…

材料科学 · 物理学 2017-07-27 M. E. Cifuentes-Quintal , O. de la Peña-Seaman , R. de Coss

It is shown that thermally excited plasmon-polariton modes can strongly mediate, enhance and \emph{tune} the near-field radiation transfer between two closely separated graphene sheets. The dependence of near-field heat exchange on doping…

介观与纳米尺度物理 · 物理学 2013-05-30 Ognjen Ilic , Marinko Jablan , John D. Joannopoulos , Ivan Celanovic , Hrvoje Buljan , Marin Soljačić

Electronic cooling in hybrid normal metal-insulator-superconductor junctions is a promising technology for the manipulation of thermal loads in solid state nanosystems. One of the main bottlenecks for efficient electronic cooling is the…

Using a semi-classical approach and input from experiments on the conductivity of graphene, we determine the electronic density dependence of the electronic transport coefficients -- conductivity, thermal conductivity and thermopower -- of…

介观与纳米尺度物理 · 物理学 2009-11-13 N. M. R. Peres , J. M. B. Lopes dos Santos , T. Stauber

Ultrafast thermal transport in low-dimensional materials challenges traditional diffusive models due to reduced scattering, strong electron-phonon coupling, and pronounced non-equilibrium effects. To address these complexities, we extend…

介观与纳米尺度物理 · 物理学 2025-12-01 Houssem Rezgui , Chuang Zhang , Clivia Sotomayor-Torres

We study the effect of electron-electron interaction on the one-particle density of states (\emph{DOS}) $\rho^{(d)}(\epsilon,T)$ of low-dimensional disordered metals near Fermi energy within the framework of the finite temperature…

强关联电子 · 物理学 2015-05-14 E. Sasioglu , S. Caliskan , M. Kumru

We construct a nonperturbative nonequilibrium theory for graphene electrons interacting via the instantaneous Coulomb interaction by combining the functional renormalization group method with the nonequilibrium Keldysh formalism. The…

介观与纳米尺度物理 · 物理学 2017-03-15 Christian Fräßdorf , Johannes E. M. Mosig

We present a theoretical study of electron-phonon scattering effects in thin films made of a strong topological insulator. Phonons are modelled by isotropic elastic continuum theory with stress-free boundary conditions, and the interaction…

介观与纳米尺度物理 · 物理学 2012-01-26 Sébastien Giraud , Arijit Kundu , Reinhold Egger

We have investigated coupling constants in elementary electron-phonon scattering processes on a graphite surface by the combined use of high-resolution electron-energy-loss spectroscopy (HREELS) and very low-energy electron diffraction…

Assuming diffusive carrier transport and employing an effective medium theory, we calculate the temperature dependence of bilayer graphene conductivity due to Fermi-surface broadening as a function of carrier density. We find that the…

介观与纳米尺度物理 · 物理学 2010-09-08 Shaffique Adam , M. D. Stiles

We study how the Fermi energy of a graphene monolayer separated from a conducting substrate by a dielectric spacer depends on the properties of the substrate and on an applied voltage. An analytical model is developed that describes the…

介观与纳米尺度物理 · 物理学 2013-02-21 Menno Bokdam , Petr A. Khomyakov , Geert Brocks , Paul J. Kelly

We study the interplay of electron-electron and electron-disorder scattering in correlated Fermi liquids by the disordered Hubbard model using dynamical mean-field theory with an IPT-CPA solver. We find significant violations of…

强关联电子 · 物理学 2025-02-25 Arianna Poli , Simone Fratini , Jennifer Coulter , Andrew J. Millis , Sergio Ciuchi

Graphene is a novel two-dimensional material with fascinating electrodynamic properties like the ability to support collective electron oscillations (plasmons) accompanied by tight confinement of electromagnetic fields. Our goal is to…

介观与纳米尺度物理 · 物理学 2013-03-15 Marinko Jablan

We show that in presence of a deformable lattice potential, the nature of the disorder-driven metal-insulator transition (MIT) is fundamentally changed with respect to the non-interacting (Anderson) scenario. For strong disorder, even a…

无序系统与神经网络 · 物理学 2017-01-25 Domenico Di Sante , Simone Fratini , Vladimir Dobrosavljević , Sergio Ciuchi

Using transient absorption (TA) microscopy as a hot electron thermometer we show disorder-assisted acoustic-phonon supercollisions (SCs) best describes the rate-limiting relaxation step in graphene over a wide range of lattice temperatures…

材料科学 · 物理学 2013-10-25 Matt W. Graham , Su-Fei Shi , Zenghui Wang , Daniel C. Ralph , Jiwoong Park , Paul L. McEuen

Thermoelectric effects allow the generation of electrical power from waste heat and the electrical control of cooling and heating. Remarkably, these effects are also highly sensitive to the asymmetry in the density of states around the…

介观与纳米尺度物理 · 物理学 2016-07-13 I. J. Vera-Marun , J. J. van den Berg , F. K. Dejene , B. J. van Wees

We study the effects of disorder in the electronic properties of graphene multilayers, with special focus on the bilayer and the infinite stack. At low energies and long wavelengths, the electronic self-energies and density of states…

强关联电子 · 物理学 2013-05-29 Johan Nilsson , A. H. Castro Neto , F. Guinea , N. M. R. Peres

The "density-density" correlation function of conduction electrons in metal is investigated. It is shown, that the asymptotic behaviour of the CF depends on the shape and the local geometry of the Fermi surface. In particular, the exponent…

凝聚态物理 · 物理学 2009-10-22 D. I. Golosov , M. I. Kaganov

By way of the non-equilibrium Green's function simulations and analytical expressions, the quantum thermal conductance of stanene is studied. We find that, due to the existence of Dirac fermion in stanene, the ratio of electron thermal…

材料科学 · 物理学 2016-07-19 Hangbo Zhou , Yongqing Cai , Gang Zhang , Yong-Wei Zhang

The electrical conductivity of graphene containing point defects is studied within the binary alloy model in its dependence on the Fermi level position at the zero temperature. It is found that the minimal conductivity value does not have a…

无序系统与神经网络 · 物理学 2015-05-18 Yuriy V. Skrypnyk , Vadim M. Loktev