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We present a numerical study of electron transport in a thin film of varying disorder strength with the distance from its surface. A simple tight-binding model is used to describe the system, in which the film is attached to two metallic…

介观与纳米尺度物理 · 物理学 2009-06-06 Santanu K. Maiti

We study the transport properties of a quasi-two-dimensional diffusive normal metal film attached to a superconductor. We demonstrate that the properties of such films can essentially differ from those of quasi-one-dimensional systems: in…

超导电性 · 物理学 2009-10-30 Frank K. Wilhelm , Andrei D. Zaikin , Herve Courtois , .

We explore a novel transport phenomenon by studying the effect of surface disorder on electron transport through a finite size conductor with side coupled metallic electrodes. In the strong disorder regime the current amplitude increases…

介观与纳米尺度物理 · 物理学 2009-11-06 Santanu K. Maiti

Using the transfer matrix technique, we investigate the propagation of electron through a two dimensional disordered sample. We find that the spatial distribution of electrons is homogeneous only in the limit of weak disorder (diffusive…

无序系统与神经网络 · 物理学 2010-09-28 P. Markos

Electron transport is studied in surface oxidized single-crystal copper thin films with a thickness of up to 5.6 nm by applying density functional theory and density functional tight binding methods to determine electron transport…

Effect of static charges on charge carrier transport in disordered organic materials is considered. Long range nature of Coulomb interaction requires to take into consideration a finite thickness of the transport layer. Presence of…

无序系统与神经网络 · 物理学 2007-05-23 Sergey Novikov

We study electron transport properties of some molecular wires and a unconventional disordered thin film within the tight-binding framework using Green's function technique. We show that electron transport is significantly affected by…

介观与纳米尺度物理 · 物理学 2009-06-29 Santanu K. Maiti

The interrelation between disorder and interactions in two dimensional electron liquid is studied beyond weak coupling perturbation theory. Strong repulsion significantly reduces the electronic density of states on the Fermi level. This…

无序系统与神经网络 · 物理学 2007-05-23 B. Rosenstein , Tran Minh-Tien

Highly disordered NbN thin films exhibit promising superconducting and optical properties. Despite extensive study, discrepancies in its basic electronic properties persist. Analysis of the optical conductivity of disordered ultra-thin NbN…

Quasicrystals are assumed to be electronically stabilized by a Hume-Rothery type mechanism. This explains most of the peculiar properties of quasicrystals. The stabilization is investigated by electronic transport properties, as they depend…

材料科学 · 物理学 2007-05-23 Roland Haberkern

We study the transport properties of interacting electrons in a disordered quantum wire within the framework of the Luttinger liquid model. We demonstrate that the notion of weak localization is applicable to the strongly correlated…

无序系统与神经网络 · 物理学 2007-05-23 I. V. Gornyi , A. D. Mirlin , D. G. Polyakov

We explore electron transport properties in a quantum wire attached to two metallic electrodes. A simple tight-binding model is used to describe the system and the coupling of the wire to the electrodes (source and drain) is treated through…

介观与纳米尺度物理 · 物理学 2010-01-10 Santanu K. Maiti

We probe the effects of strong disorder (2.4 < kFl < 8.6) on superconductivity in thin films of niobium titanium nitride and titanium nitride by measuring the microwave electrodynamics in coplanar waveguide resonators. We find a gradual…

超导电性 · 物理学 2012-09-11 E. F. C. Driessen , P. C. J. J. Coumou , R. R. Tromp , P. J. de Visser , T. M. Klapwijk

The electronic properties of thin films present quantum-size effects, which are a consequence of the finite size of the system. Here we focus on the investigation of these effects on the electronic energy loss of charged particles moving…

材料科学 · 物理学 2009-10-31 A. Garcia-Lekue , J. M. Pitarke

We present an overview of the measured transport properties of the two dimensional electron fluids in high mobility semiconductor devices with low electron densities, and of some of the theories that have been proposed to account for them.…

无序系统与神经网络 · 物理学 2010-06-01 B. Spivak , S. V. Kravchenko , S. A. Kivelson , X. P. A. Gao

Electron transport is theoretically investigated in a molecular device made of anthracene molecule attached to the electrodes by thiol end groups in two different configurations (para and meta, respectively). Molecular system is described…

介观与纳米尺度物理 · 物理学 2007-05-23 Kamil Walczak

The effects of chemical disorder on the electronic and optical properties of semiconductor alloy multilayers are studied based on the tight-binding theory and single-site coherent potential approximation. Due to the quantum confinement of…

介观与纳米尺度物理 · 物理学 2010-06-03 Alireza Saffarzadeh , Leili Gharaee

We consider the problem of electron transport across a quasi-one-dimensional disordered multiply-scattering medium, and study the statistical properties of the electron density inside the system. In the physical setup that we contemplate,…

无序系统与神经网络 · 物理学 2020-01-29 Pier A. Mello , Miztli Yépez

Anderson localization, the absence of diffusive transport in disordered systems, has been manifested as hopping transport in numerous electronic systems, whereas in recently discovered topological insulators it has not been directly…

介观与纳米尺度物理 · 物理学 2015-06-19 Jian Liao , Yunbo Ou , Xiao Feng , Shuo Yang , Chaojing Lin , Wenmin Yang , Kehui Wu , Ke He , Xucun Ma , Qi-Kun Xue , Yongqing Li

We study coherent quantum transport through a superconducting film connected to normal-metal electrodes. Simple expressions for the differential conductance and the local density of states are obtained in the clean limit and for transparent…

超导电性 · 物理学 2009-11-07 M. Bozovic , Z. Pajovic , Z. Radovic
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