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We discuss magnetic transport in the system of two adjacent hard-wall layers exposed to a homogeneous field perpendicular to the layer plane and coupled laterally through a strip-shaped window in the common boundary. We show that the…

谱理论 · 数学 2022-10-12 Pavel Exner

Adopting the mean-field composite fermion picture, we describe the magneto-transport properties of a two-dimensional electron gas with laterally modulated density around filling factor 1/2. The occurrence of a strong positive…

介观与纳米尺度物理 · 物理学 2007-05-23 S. D. M. Zwerschke , R. R. Gerhardts

We present a theoretical study of momentum-resolved tunneling between parallel two-dimensional conductors whose charge carriers have a (pseudo-)spin-1/2 degree of freedom that is strongly coupled to their linear orbital momentum. Specific…

介观与纳米尺度物理 · 物理学 2013-12-12 L. Pratley , U. Zuelicke

The transport properties of interacting electrons for which the spin degree of freedom is taken into account are numerically studied for small two dimensional diffusive clusters. On-site electron-electron interactions tend to delocalize the…

介观与纳米尺度物理 · 物理学 2009-11-07 Richard Berkovits , Jan W. Kantelhardt

A novel approach is presented to efficiently include transport effects in thin active material coating layers of all-solid-state batteries using a dimensionally reduced formulation embedded into a three-dimensionally resolved coupled…

化学物理 · 物理学 2023-07-06 Stephan Sinzig , Christoph P. Schmidt , Wolfgang A. Wall

We use quantum kinetic theory to calculate the thermoelectric transport properties of the 2D single band Fermi-Hubbard model in the weak coupling limit. For generic filling, we find that the high-temperature limiting behaviors of the…

量子气体 · 物理学 2021-11-03 Thomas G. Kiely , Erich J. Mueller

Layered systems shows anisotropic transport properties. The interlayer conductivity show a general temperature dependence for a wide class of materials. This can be understood if conduction occurs in two different channels activated at…

介观与纳米尺度物理 · 物理学 2007-05-23 Urban Lundin , Ross H. McKenzie

We have performed electrical resistivity and DC magnetization measurements as a function of temperature, on polycrystalline samples of phase separated LaPrCaMnO. We have used the General Effective Medium Theory to obtain theoretical…

材料科学 · 物理学 2014-08-18 J. Sacanell , M. Quintero , F. Parisi , L. Ghivelder , A. G. Leyva , P. Levy

Ambipolar transport is a commonly occurring theme in semimetals and semiconductors. Here we present an analytical formulation of the conductivity for a two-band system. Electron and hole carrier densities and their respective conductivities…

We have considered the conductivity properties of a two dimensional electron gas (2DEG) in two different kinds of inhomogeneous magnetic fields, i.e. a disordered distribution of magnetic flux vortices, and a periodic array of magnetic flux…

凝聚态物理 · 物理学 2009-10-22 Mads Nielsen , Per Hedegaard

We present a model to describe the nonlinear response to a direct dc current applied to a two-dimensional electron system in a strong magnetic field. The model is based on the solution of the von Neumann equation incorporating the exact…

介观与纳米尺度物理 · 物理学 2010-09-21 A. Kunold , M. Torres

We review the fabrication and key transport properties of graphene double layers, consisting of two graphene monolayers placed in close proximity, independently contacted, and separated by an ultra-thin dielectric. We outline a simple band…

介观与纳米尺度物理 · 物理学 2012-06-14 Seyoung Kim , Emanuel Tutuc

We have investigated the local magneto-transport in high-quality 2D electron systems at low carrier densities. The positive magneto-resistance in perpendicular magnetic field in the strongly insulating regime has been measured to evaluate…

介观与纳米尺度物理 · 物理学 2009-11-10 A. Ghosh , M. Pepper , H. E. Beere , D. A. Ritchie

We consider two-dimensional spin-polarized dipolar Fermi gases confined in a double-layer system and calculate the momentum transfer between the layers as a function of temperature to investigate the transport properties of the system. We…

量子气体 · 物理学 2024-06-14 B. Renklioglu , Ben Yu-Kuang Hu , M. O. Oktel , B. Tanatar

I consider the effect of the finite width of the resonant level on its thermodynamics and tunneling transport properties in the single electron charging regime. The finite width of the levels results from their delocalization with formation…

凝聚态物理 · 物理学 2008-02-03 V. Ponomarenko

We calculate the transport coefficients like shear viscosity and electrical conductivity with respect to density of dense hadronic and quark matter. By considering the simple massless limit for the quark matter and two different effective…

核理论 · 物理学 2023-03-02 Debashree Sen , Naosad Alam , Sabyasachi Ghosh

We develop a hydrodynamic description of transport properties in graphene-based systems which we derive from the quantum kinetic equation. In the interaction-dominated regime, the collinear scattering singularity in the collision integral…

介观与纳米尺度物理 · 物理学 2015-04-28 B. N. Narozhny , I. V. Gornyi , M. Titov , M. Schütt , A. D. Mirlin

We study the effect of magnetic field on the properties of a high mobility gated two-dimensional electron gas in a field effect transistor with the Hall bar geometry. When approaching the current saturation when the drain side of the…

介观与纳米尺度物理 · 物理学 2020-12-30 N. Dyakonova , M. Dyakonov , Z. D. Kvon

This paper discusses the topological and transport properties of binary heterostructures of different topological materials. The creation of multilayer devices is an alternative to building synthetic topological materials. By adjusting the…

介观与纳米尺度物理 · 物理学 2023-06-16 R. Pineda , W. Herrera

The magnetic-field, temperature, and angular dependence of the interlayer magnetoresistance of two different quasi-two-dimensional (2D) organic superconductors is reported. For $\kappa$-(BEDT-TTF)$_2$I$_3$ we find a well-resolved peak in…