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相关论文: Coulomb drag driven electron-hole bifluidity in do…

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Doping is one of the most prominent techniques to alter properties of a given material. Herein, the influence of the electron- and hole-doping on the selected superconducting properties of graphene are considered. In details, the…

超导电性 · 物理学 2023-04-12 Ewa A. Drzazga-Szczęśniak , Adam Z. Kaczmarek

We develop a theory of Coulomb interaction-mediated contribution to valley Hall effect (VHE) in two-dimensional non-centrosymmetric gapped Dirac materials. We assume that the bare valley Hall current occurs in the system due to the presence…

介观与纳米尺度物理 · 物理学 2024-07-12 D. S. Eliseev , A. V. Parafilo , V. M. Kovalev , O. V. Kibis , I. G. Savenko

Coulomb drag experiments can give us information about the interaction state of double-layer systems. Here, we demonstrate anomalous Coulomb drag behaviours in a two-dimensional electron-electron bilayer system constructed by stacking…

介观与纳米尺度物理 · 物理学 2023-02-15 Meizhen Huang , Zefei Wu , Ning Wang , Siu-Tat Chui

Lateral charge transport of a two-dimensional (2D) electronic system can be much influenced by feeding a current into another closely spaced 2D conductor, known as the Coulomb drag phenomenon -- a powerful probe of electron-electron…

介观与纳米尺度物理 · 物理学 2025-03-04 Yingjia Liu , Kaining Yang , Kenji Watanabe , Takashi Taniguchi , Wencai Ren , Zheng Vitto Han , Siwen Zhao

Insight into why superconductivity in pristine and doped monolayer graphene seems strongly suppressed has been central for the recent years' various creative approaches to realize superconductivity in graphene and graphene-like systems. We…

超导电性 · 物理学 2020-06-12 Even Thingstad , Akashdeep Kamra , Justin W. Wells , Asle Sudbø

The phenomenon of low-temperature spin Coulomb drag in a two-dimensional electron gas is investigated. The spin transresistivity coefficient is essentially enhanced in the diffusive regime, as compared to conventional predictions. The…

强关联电子 · 物理学 2016-02-12 A. G. Yashenkin , I. V. Gornyi

We analyze charging effects in graphene quantum dots. Using a simple model, we show that, when the Fermi level is far from the neutrality point, charging effects lead to a shift in the electrostatic potential and the dot shows standard…

介观与纳米尺度物理 · 物理学 2008-02-06 B. Wunsch , T. Stauber , F. Guinea

We study the influence of spin-orbit interaction on electron-electron scattering in the Coulomb drag setup. We study a setup made of a time-reversal-symmetry-broken Weyl semimetal (WSM) layer and a normal metal layer. The interlayer drag…

介观与纳米尺度物理 · 物理学 2024-09-18 Yonatan Messica , Dmitri B. Gutman

We investigate transport and Coulomb drag properties of semiconductor-based electron-hole bilayer systems. Our calculations are motivated by recent experiments in undoped electron-hole bilayer structures based on GaAs-AlGaAs gated double…

介观与纳米尺度物理 · 物理学 2008-09-16 E. H. Hwang , S. Das Sarma

We study the electrical susceptibility of a hydrogen gas at equilibrium, partially ionized by thermal excitations. The gas is described as a quantum plasma of point protons and electrons, interacting via the Coulomb potential. Using the…

统计力学 · 物理学 2009-11-10 V. Ballenegger , Ph. A. Martin

The dynamics of the diffusion flow of holes photoinjected into a mesoscopic GaAs channel of variable width, where they, together with background electrons, form a hydrodynamic electron-hole fluid, is studied using time-resolved…

介观与纳米尺度物理 · 物理学 2024-03-08 M. A. T. Patricio , G. M. Jacobsen , M. D. Teodoro , G. M. Gusev , A. K. Bakarov , Yu. A. Pusep

We report here the charge transport behavior in graphene nanojunctions in which graphene nanodots, with relatively long relaxation time, are interfaced with ferromagnetic electrodes. Subsequently we explore the effect of substitutional…

材料科学 · 物理学 2018-09-12 Subramani Amutha , Arijit Sen

The diagrammatic linear response formalism for the Coulomb drag in two--layer systems is developed. This technique can be used to treat both elastic disorder and intralayer interaction effects. In the absence of intralayer…

凝聚态物理 · 物理学 2009-10-28 Alex Kamenev , Yuval Oreg

The screening problem for the Coulomb potential of a charge located in a two-dimensional (2D) system has an intriguing solution with a power law distance screening factor due to out-of-plane electrical fields. This is crucially different…

介观与纳米尺度物理 · 物理学 2024-09-10 K. A. Baryshnikov , A. V. Gert , Yu. B. Vasilyev , A. P. Dmitriev

We investigate the density and temperature-dependent conductance of graphene nanoribbons with varying aspect ratio. Transport is dominated by a chain of quantum dots forming spontaneously due to disorder. Depending on ribbon length,…

介观与纳米尺度物理 · 物理学 2011-10-11 S. Dröscher , H. Knowles , Y. Meir , K. Ensslin , T. Ihn

We show that electron transport through a long multichannel wire, connected to leads by tunnel junctions, at low temperatures and voltages is dominated by inelastic cotunnelling. This mechanism results in experimentally observed power-law…

介观与纳米尺度物理 · 物理学 2015-05-13 M. V. Feigelman , A. S. Ioselevich

Hydrodynamic interactions between fluid-dispersed particles are ubiquitous in soft matter and biological systems and they give rise to intriguing collective phenomena. While it was reported that these interactions can facilitate…

软凝聚态物质 · 物理学 2022-08-29 Eric Cereceda-López , Dominik Lips , Antonio Ortiz-Ambriz , Artem Ryabov , Philipp Maass , Pietro Tierno

We theoretically study the Coulomb drag resistivity and plasmon modes behavior for a system composed of two parallel p-type doped GaS monolayers with Mexican-hat valence energy band using the Boltzmann transport theory formalism. We…

介观与纳米尺度物理 · 物理学 2022-01-07 S. Rostami , T. Vazifehshenas , T. Salavati-fard

The magnetotransport properties of a two-dimensional electron liquid in graphene are analyzed in the hydrodynamic limit under isothermal conditions. It is shown that the Wiedemann-Franz law does not hold in this regime and that the Lorenz…

介观与纳米尺度物理 · 物理学 2025-06-05 Alex Levchenko

Employing unbiased sign-problem-free quantum Monte Carlo, we investigate the effects of long-range Coulomb forces on BEC of bipolarons using a model of bond phonon-modulated electron hopping. In absence of long-range repulsion, this model…

超导电性 · 物理学 2023-12-19 J. Sous , C. Zhang , M. Berciu , D. R. Reichman , B. V. Svistunov , N. V. Prokof'ev , A. J. Millis
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