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相关论文: Plasmonic Cooper pairing in single layer graphene

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In this paper, we calculated the dielectric function, the loss function, the magnetoplasmon dispersion relation and the temperature-induced transitions for graphene in a uniform perpendicular magnetic field B. The calculations were…

介观与纳米尺度物理 · 物理学 2014-04-14 Jhao-Ying Wu , Szu-Chao Chen , Oleksiy Roslyak , Godfrey Gumbs , Ming-Fa Lin

We calculate the long-wavelength static screening properties of both neutral and doped graphene in the framework of density-functional theory. We use a plane-wave approach with periodic images in the third dimension and truncate the Coulomb…

材料科学 · 物理学 2015-05-20 Thibault Sohier , Matteo Calandra , Francesco Mauri

Many of graphene's unique electronic properties emerge from its Dirac-like electronic energy spectrum. Similarly, it is expected that a nanophotonic system featuring Dirac dispersion will open a path to a number of important research…

介观与纳米尺度物理 · 物理学 2015-06-04 J. Bravo-Abad , J. D. Joannopoulos , M. Soljacic

We have conducted a thorough theoretical and numerical investigation of the electronic susceptibility, polarizability, plasmons, their damping rates, as well as the static screening in pseudospin-1 Dirac cone materials with a flat band, or…

Graphene is a 2-dimensional material with high carrier mobility and thermal conductivity, suitable for high-speed electronics. Conduction and valence bands touch at the Dirac point. The absorptivity of single-layer graphene is 2.3%, nearly…

介观与纳米尺度物理 · 物理学 2010-10-11 Marcus Freitag , Hsin-Ying Chiu , Mathias Steiner , Vasili Perebeinos , Phaedon Avouris

We study the superconducting correlations induced in graphene when it is placed between two superconductors, focusing in particular on the supercurrents supported by the 2D system. For this purpose we make use of a formalism placing the…

介观与纳米尺度物理 · 物理学 2009-11-13 J. Gonzalez , E. Perfetto

Fundamental properties of warm dense matter are described by the dielectric function, which gives access to the frequency-dependent electrical conductivity, absorption, emission and scattering of radiation, charged particles stopping and…

等离子体物理 · 物理学 2016-07-27 M. Veysman , G. Röpke , M. Winkel , H. Reinholz

The response of Dirac fermions to a Coulomb potential is predicted to differ significantly from the behavior of non-relativistic electrons seen in traditional atomic and impurity systems. Surprisingly, many key theoretical predictions for…

We calculate the interaction energy and force between atoms and molecules and single-walled carbon nanotubes described by the Dirac model of graphene. For this purpose the Lifshitz-type formulas adapted for the case of cylindrical geometry…

材料科学 · 物理学 2015-05-30 Yu. V. Churkin , G. L. Klimchitskaya , A. B. Fedortsov , V. A. Yurova

We theoretically consider, comparing with the existing experimental literature, the electrical conductivity of gated monolayer graphene as a function of carrier density, temperature, and disorder in order to assess the prospects of…

介观与纳米尺度物理 · 物理学 2013-01-28 S. Das Sarma , E. H. Hwang

Graphene has emerged as a paradigmatic material in condensed matter physics due to its exceptional electronic, mechanical, and thermal properties. A deep understanding of its thermoelectric transport behavior is crucial for the development…

介观与纳米尺度物理 · 物理学 2026-05-20 Juan A. Cañas , Daniel A. Bonilla , A. Martín-Ruiz

The phase space for graphene's minimum conductivity $\sigma_\mathrm{min}$ is mapped out using Landauer theory modified for scattering using Fermi's Golden Rule, as well as the Non-Equilibrium Green's Function (NEGF) simulation with a Monte…

介观与纳米尺度物理 · 物理学 2015-11-11 Redwan N. Sajjad , Frank Tseng , K. M. Masum Habib , Avik W. Ghosh

We have calculated the plasmon modes in graphene double layer structures at finite temperatures, taking into account the inhomogeneity of the dielectric background of the system. The effective dielectric function is obtained from the…

介观与纳米尺度物理 · 物理学 2013-12-17 S. M. Badalyan , F. M. Peeters

The linear energy-momentum dispersion, coupled with pseudo-spinors, makes graphene an ideal solid-state material platform to realize an electronic device based on Dirac-Fermionic relativistic quantum mechanics. Employing local gate control,…

介观与纳米尺度物理 · 物理学 2019-03-21 Ke Wang , Mirza M. Elahi , K. M. Masum Habib , Takashi Taniguchi , Kenji Watanabe , Avik W. Ghosh , Gil-Ho Lee , Philip Kim

The heating of carriers in an intrinsic graphene under an abrupt switching off a dc electric field is examined taking into account both the energy relaxation via acoustic and optic phonons and the interband generation-recombination…

介观与纳米尺度物理 · 物理学 2015-05-20 P. N. Romanets , F. T. Vasko

We study the effects of insulating oxides in their crystalline forms on the energy band structure of monolayer and bilayer graphene using a \textit{first principles} density functional theory based electronic structure method and a local…

材料科学 · 物理学 2011-12-09 Priyamvada Jadaun , Sanjay K. Banerjee , Leonard F. Register , Bhagawan Sahu

We study the thermal and electric transport of a fluid of interacting Dirac fermions as they arise in single-layer graphene. We include Coulomb interactions, a dilute density of charged impurities and the presence of a magnetic field to…

介观与纳米尺度物理 · 物理学 2009-05-31 Markus Mueller , Lars Fritz , Subir Sachdev , Joerg Schmalian

In this work, we report on hot carrier diffusion in graphene across large enough length scales that the carriers are not thermalized across the crystal. The carriers are injected into graphene at one site and their thermal transport is…

介观与纳米尺度物理 · 物理学 2019-04-03 A. W. Draelos , A. Silverman , B. Eniwaye , E. G. Arnault , C. T. Ke , M. T. Wei , I. Vlassiouk , I. V. Borzenets , F. Amet , G. Finkelstein

Particle beds are widely used in various systems and processes, such as particle heat exchangers, granular flow reactors, and additive manufacturing. Accurate modeling of thermal conductivity of particle beds and understanding of their heat…

材料科学 · 物理学 2021-11-10 Jian Zeng , Ka Man Chung , Xintong Zhang , Sarath Adapa , Tianshi Feng , Yu Pei , Renkun Chen

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