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Non-diffusive effects in charge transport become relevant as device sizes and features become comparable to the electronic mean free path. As a model system, we investigate the electric transport around mesoscopic defects in graphene with…

介观与纳米尺度物理 · 物理学 2025-10-03 Toni Markovic , Wei Huang , William S. Huxter , Pietro Gambardella , Sebastian Stepanow

We study the electron transport through a graphene nanoribbon-superconductor junction. Both zigzag and armchair edge graphene nanoribbons are considered, and the effects of the magnetic field and disorder on the transport property are…

介观与纳米尺度物理 · 物理学 2015-05-13 Qing-feng Sun , X. C. Xie

Graphene's isolation launched explorations of fundamental relativistic physics originating from the planar honeycomb lattice arrangement of the carbon atoms, and of potential technological applications in nanoscale electronics. Bottom-up…

介观与纳米尺度物理 · 物理学 2015-02-13 Constantine Yannouleas , Igor Romanovsky , Uzi Landman

In very clean solid-state systems, where carrier-carrier interactions dominate over any other scattering mechanisms, the flow of electrons can be described within a hydrodynamic framework. In these cases, analogues of viscous fluid…

The unique ultra-relativistic, massless, nature of electron states in two-dimensional extended graphene sheets, brought about by the honeycomb lattice arrangement of carbon atoms in two-dimensions, provides ingress to explorations of…

介观与纳米尺度物理 · 物理学 2015-02-18 Constantine Yannouleas , Igor Romanovsky , Uzi Landman

The experimental availability of ultra-high-mobility samples of graphene opens the possibility to realize and study experimentally the "hydrodynamic" regime of the electron liquid. In this regime the rate of electron-electron collisions is…

介观与纳米尺度物理 · 物理学 2015-06-22 Alessandro Principi , Giovanni Vignale

We experimentally investigate electrical transport properties of graphene, which is a two dimensional (2D) conductor with relativistic energy dispersion relation. By investigating single- and bi-layer graphene devices with different aspect…

介观与纳米尺度物理 · 物理学 2009-11-13 F. Miao , S. Wijeratne , U. Coskun , Y. Zhang , C. N. Lau

Solid mixed conductors with significant ionic as well as electronic conduction play a pivotal role for mass transfer and storage as required in battery electrodes. Single-phase materials with simultaneously high electronic and ionic…

介观与纳米尺度物理 · 物理学 2017-09-11 M. Kühne , F. Paolucci , J. Popovic , P. M. Ostrovsky , J. Maier , J. H. Smet

Localized states in graphene have garnered significant attention in quantum information science due to their potential applications. Despite graphene's superior transport and electronic properties compared to other semiconductors, achieving…

介观与纳米尺度物理 · 物理学 2024-07-30 Seunghyun Jun , Myung-Chul Jung , Nojoon Myoung

Charge carriers in graphene are chiral quasiparticles ("massless Dirac fermions"). Graphene provides therefore an amazing opportunity to study subtle quantum relativistic effects in condensed matter experiment. Here I review a theory of one…

介观与纳米尺度物理 · 物理学 2011-05-12 M. I. Katsnelson

Improved fabrication techniques have enabled the possibility of ballistic transport and unprecedented spin manipulation in ultraclean graphene devices. Spin transport in graphene is typically probed in a nonlocal spin valve and is analyzed…

介观与纳米尺度物理 · 物理学 2020-05-25 Marc Vila , Jose H. Garcia , Aron W. Cummings , Stephen R. Power , Christoph W. Groth , Xavier Waintal , Stephan Roche

We study the effects of the long-range disorder potential and warping on the conductivity and mobility of graphene ribbons using the Landauer formalism and the tight-binding p-orbital Hamiltonian. We demonstrate that as the length of the…

介观与纳米尺度物理 · 物理学 2015-05-14 J. W. Klos , A. A. Shylau , I. V. Zozoulenko , Hengyi Xu , T. Heinzel

We report an experimental investigation of the edge effect on the room-temperature transport in graphene nanoribbon and graphene sheet (both single-layer and bilayer). By measuring the resistance scaling behaviors at both low and high…

介观与纳米尺度物理 · 物理学 2011-02-15 Guangyu Xu , Carlos M. Torres , Jianshi Tang , Jingwei Bai , Emil B. Song , Yu Huang , Xiangfeng Duan , Yuegang Zhang , Kang L. Wang

Diffusion currents are theoretically examined in two-dimensional Dirac materials, such as those of the transition metal dichalcogenides (TMD) family. The transversal effects are analogues of the valley Hall (VHE) and photogalvanic (PGE)…

介观与纳米尺度物理 · 物理学 2023-03-01 A. V. Snegirev , V. M. Kovalev , M. V. Entin

By analyzing the displacement statistics of an assembly of horizontally vibrated bidisperse frictional grains in the vicinity of the jamming transition experimentally studied before, we establish that their superdiffusive motion is a…

软凝聚态物质 · 物理学 2010-07-06 F. Lechenault , R. Candelier , O. Dauchot , J. P. Bouchaud , G. Biroli

We investigate the motion of charged particles in a turbulent electrostatic potential using guiding-center theory. By increasing the Larmor radius, the dynamics exhibit close-to-ballistic transport properties. The transition from diffusive…

等离子体物理 · 物理学 2023-09-07 Matteo Stanzani , Filippo Arlotti , Guido Ciraolo , Xavier Garbet , Cristel Chandre

We study transport properties of graphene with anisotropically distributed on-site impurities (adatoms) that are randomly placed on every third line drawn along carbon bonds. We show that stripe states characterized by strongly suppressed…

无序系统与神经网络 · 物理学 2016-07-27 S. Gattenloehner , I. V. Gornyi , P. M. Ostrovsky , B. Trauzettel , A. D. Mirlin , M. Titov

Due to the weak spin-orbit interaction and the peculiar relativistic dispersion in graphene, there are exciting proposals to build spin qubits in graphene nanoribbons with armchair boundaries. However, the mutual interactions between…

介观与纳米尺度物理 · 物理学 2009-11-13 Hsiu-Hau Lin , Toshiya Hikihara , Horng-Tay Jeng , Bor-Luen Huang , Chung-Yu Mou , Xiao Hu

Electron transport through a nanostructure can be characterized in part using concepts from classical fluid dynamics. It is thus natural to ask how far the analogy can be taken, and whether the electron liquid can exhibit nonlinear…

介观与纳米尺度物理 · 物理学 2013-08-27 Neil Bushong , John Gamble , Massimiliano Di Ventra

Graphene has proven to host outstanding mesoscopic effects involving massless Dirac quasiparticles travelling ballistically resulting in the current flow exhibiting light-like behaviour. A new branch of 2D electronics inspired by the…

介观与纳米尺度物理 · 物理学 2018-08-22 Gaetano Calogero , Nick R. Papior , Peter Bøggild , Mads Brandbyge