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相关论文: Semiclassical Analysis of the Conductance of Mesos…

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The Kubo formula for the conductance of a mesoscopic system is analyzed semiclassically, yielding simple expressions for both weak localization and universal conductance fluctuations. In contrast to earlier work which dealt with times…

凝聚态物理 · 物理学 2009-10-28 Nathan Argaman

We present a refined semiclassical approach to the Landauer conductance and Kubo conductivity of clean chaotic mesoscopic systems. We demonstrate for systems with uniformly hyperbolic dynamics that including off-diagonal contributions to…

介观与纳米尺度物理 · 物理学 2009-11-07 Klaus Richter , Martin Sieber

A relation derived from the Kubo formula shows that optical conductivity measurements below the gap frequency in doped semiconductors can be used to probe directly the time-dependent quantum dynamics of charge carriers. This allows to…

材料科学 · 物理学 2015-03-17 S. Ciuchi , S. Fratini , D. Mayou

The method is proposed adapted for calculating the T=0 conductance of arbitrarily stretched disordered conducting strips in terms of the Kubo theory. The 2D scattering problem is solved through exact one-dimensionalization in mode…

无序系统与神经网络 · 物理学 2009-10-31 Yu. V. Tarasov

Consider a multichannel closed ring with disorder. In the semiclassical treatment its conductance is given by the Drude formula. Quantum mechanics challenge this result both in the limit of strong disorder (eigenstates are not…

介观与纳米尺度物理 · 物理学 2007-05-23 Doron Cohen

Semiclassical methods are extremely valuable in the study of transport and thermodynamical properties of ballistic microstructures. By expressing the conductance in terms of classical trajectories, we demonstrate that quantum interference…

介观与纳米尺度物理 · 物理学 2007-05-23 Rodolfo A. Jalabert

We present a detailed study of quantum transport in large antidot arrays whose classical dynamics is chaotic. We calculate the longitudinal and Hall conduc- tivities semiclassically starting from the Kubo formula. The leading contribu- tion…

凝聚态物理 · 物理学 2009-10-22 Gregor Hackenbroich , Felix von Oppen

Kubo formula is used to get the d.c conductance of a statistical ensemble of two-dimensional clusters of the square lattice in the presence of standard diagonal disorder, a uniform magnetic field and random magnetic fluxes. Working within a…

介观与纳米尺度物理 · 物理学 2009-10-31 J. A. Verges

We study how the intrinsic anomalous Hall conductivity is modified in two-dimensional crystals with broken time-reversal symmetry due to weak inhomogeneity of the applied electric field. Focusing on a clean noninteracting two-band system…

介观与纳米尺度物理 · 物理学 2021-04-13 Vladyslav Kozii , Alexander Avdoshkin , Shudan Zhong , Joel E. Moore

Kubo formula is used to get the scaling behavior of the static conductance distribution of wide wires showing pure non-diagonal disorder. Following recent works that point to unusual phenomena in some circumstances, scaling at the band…

无序系统与神经网络 · 物理学 2009-11-07 J. A. Verges

The average of densities of currents and charges, induced by a weak electromagnetic field in spatially inhomogeneous are calculated at final temperatures. The Kubo formula for a conductivity tensor is generalized for spatially inhomogeneous…

介观与纳米尺度物理 · 物理学 2009-11-10 S. T. Pavlov , I. G. Lang , L. I. Korovin

The expressions for average densities of currents and charges induced by a weak electromagnetic field in spatially inhomogeneous systems are obtained. The case of finite temperatures is considered. It is shown that average values are…

介观与纳米尺度物理 · 物理学 2016-08-31 I. G. Lang , L. I. Korovin , S. T. Pavlov

We derive semiclassical expressions for the Kubo conductivity tensor. Within our approach the oscillatory parts of the diagonal and Hall conductivity are given as sums over contributions from classical periodic orbits in close relation to…

凝聚态物理 · 物理学 2009-10-22 Klaus Richter

We study a chaotic quantum transport in the presence of a weak spin-orbit interaction. Our theory covers the whole symmetry crossover regime between time-reversal invariant systems with and without a spin-orbit interaction. This situation…

介观与纳米尺度物理 · 物理学 2015-05-18 Keiji Saito , Taro Nagao

The conductance of a waveguide containing finite number of periodically placed identical point-like impurities is investigated. It has been calculated as a function of both the impurity strength and the number of impurities using the…

介观与纳米尺度物理 · 物理学 2009-10-30 J. Cserti , G. Szálka , G. Vattay

We calculate the Landauer conductance through chaotic ballistic devices in the semiclassical limit, to all orders in the inverse number of scattering channels without and with a magnetic field. Families of pairs of entrance-to-exit…

介观与纳米尺度物理 · 物理学 2007-05-23 Stefan Heusler , Sebastian Müller , Petr Braun , Fritz Haake

The analysis of the response to driving in the case of weakly chaotic or weakly interacting systems should go beyond linear response theory. Due to the "sparsity" of the perturbation matrix, a resistor network picture of transitions between…

量子物理 · 物理学 2013-01-22 Doron Cohen

The linear conductance of the a small metallic tunnel junction embedded in an electromagnetic environment of arbitrary impedance is determined in the semiclassical limit. Electron tunneling is treated beyond the orthodox theory of Coulomb…

介观与纳米尺度物理 · 物理学 2007-05-23 Georg Goeppert , Hermann Grabert

The conductance of one-dimensional interacting electron systems is calculated in a manner similar to Landauer's argument for non-interacting systems. Unlike in previous studies in which the Kubo formula was used, the conductance is directly…

介观与纳米尺度物理 · 物理学 2015-06-25 Akira Shimizu

We describe a semiclassical method to calculate universal transport properties of chaotic cavities. While the energy-averaged conductance turns out governed by pairs of entrance-to-exit trajectories, the conductance variance, shot noise and…

介观与纳米尺度物理 · 物理学 2007-05-23 Sebastian Müller , Stefan Heusler , Petr Braun , Fritz Haake
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