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We study how perturbations affect dynamics of integrable many-body quantum systems, causing transition from integrability to chaos. Looking at spin transport in the Heisenberg chain with impurities we find that in the thermodynamic limit…

强关联电子 · 物理学 2020-11-03 Marko Znidaric

We theoretically calculate the impurity-scattering induced resistivity of twisted bilayer graphene at low twist angles where the graphene Fermi velocity is strongly suppressed. We consider, as a function of carrier density, twist angle, and…

介观与纳米尺度物理 · 物理学 2020-03-23 E. H. Hwang , S. Das Sarma

We study the transport properties of a Luttinger liquid in the presence of several time-dependent weak point-like impurities. Our starting point is the bosonized form of the Luttinger liquid Hamiltonian with a potential introduced by the…

强关联电子 · 物理学 2007-05-23 D. Makogon , V. Juricic , C. Morais Smith

A few exactly solvable interacting quantum many-body problems with impurities were previously reported to exhibit unusual features such as non-localization and absence of backscattering. In this work we consider the use of these integrable…

介观与纳米尺度物理 · 物理学 2011-11-18 Marion Moliner , Peter Schmitteckert

We demonstrate theoretically that most of the observed transport properties of graphene sheets at zero magnetic field can be explained by scattering from charged impurities. We find that, contrary to common perception, these properties are…

介观与纳米尺度物理 · 物理学 2008-01-14 Shaffique Adam , E. H. Hwang , Victor Galitski , S. Das Sarma

We consider theoretically the transport in a one-channel spinless Luttinger liquid with two strong impurities in the presence of dissipation. As a difference with respect to the dissipation free case, where the two impurities fully transmit…

强关联电子 · 物理学 2015-05-13 Leiming Chen , Zoran Ristivojevic , Thomas Nattermann

Correlated, or extended, impurities play an important role in the transport properties of dirty metals. Here, we examine, in the framework of a tight-binding lattice, the transmission of a single electron through an array of correlated…

其他凝聚态物理 · 物理学 2009-11-11 Wonkee Kim , L. Covaci , F. Marsiglio

We present a kinetic equation approach to investigate dc transport properties of graphene in the diffusive regime considering long-range electron-impurity scattering. In our study, the effects of interband correlation (or polarization) on…

材料科学 · 物理学 2009-11-13 S. Y. Liu , X. L. Lei , Norman J. M. Horing

Diffusive transport of a particle in spatially correlated random energy landscape having exponential density of states has been considered. We exactly calculate the diffusivity in the nondispersive quasi-equilibrium transport regime and…

无序系统与神经网络 · 物理学 2018-02-14 S. V. Novikov

Since the experimental realization of graphene1, extensive theoretical work has focused on short-range disorder2-5, ''ripples''6, 7, or charged impurities2, 3, 8-13 to explain the conductivity as a function of carrier density…

其他凝聚态物理 · 物理学 2009-11-13 J. H. Chen , C. Jang , M. S. Fuhrer , E. D. Williams , M. Ishigami

We obtain general expressions for the residual density of states, electrical conductivity and thermal conductivity for non-unitary superconductors due to impurity scattering. We apply the results to the so-called `B phase' of PrOs4Sb12,…

超导电性 · 物理学 2009-11-13 T. R. Abu Alrub , S. H. Curnoe

We examine the effects of disorder in one-dimensional systems. We link the case of a few impurities, typical of a short quantum wire, to that of a finite density of scatterers more appropriate for a long wire or a macroscopic system.…

凝聚态物理 · 物理学 2007-05-23 Thierry Giamarchi , Hélène Maurey

Mechanisms of resistivity can be divided into two basic classes: one is dissipative (like scattering on phonons) and another is quasi-elastic (like scattering on static impurities). They are often treated by the empirical Matthiessen rule,…

统计力学 · 物理学 2024-07-24 Anton Kapustin , Gregory Falkovich

We extend the theory of non-Born effects in resistivity $\rho$ of clean conducting tubes (developed in our previous work arXiv:1810.00426) to ``strips'' -- quasi-one-dimensional structures in 2D conductors. Here also an original Van Hove…

介观与纳米尺度物理 · 物理学 2020-10-21 N. S. Peshcherenko , A. S. Ioselevich

We show that the non-linear dc transport in a Luttinger liquid with interaction of finite range in the presence of an impurity is governed by a sum rule which causes the charging energy to vanish.

介观与纳米尺度物理 · 物理学 2008-02-03 Gianaurelio Cuniberti , Maura Sassetti , Bernhard Kramer

The impurities, introduced intentionally or accidentally into certain materials, can significantly modify their characteristics or reveal their intrinsic physical properties, and thus play an important role in solid-state physics. Different…

量子气体 · 物理学 2013-11-07 Jian Li , Jin An , C. S. Ting

The scattering of electrons on impurities with internal degrees of freedom is bound to produce the signatures of the scatterer's own dynamics and results in nontrivial electronic transport properties. Previous studies of polaronic…

强关联电子 · 物理学 2021-01-18 J. Krsnik , I. Batistić , A. Marunović , E. Tutiš , O. S. Barišić

We investigate the effect of both strong and weak potential scattering caused by local impurities and extended (line) defects in the array of Luttinger liquid wires. We find that in both cases a finite range inter-wire interaction…

强关联电子 · 物理学 2017-10-10 A. L. Chudnovskiy , V. Kagalovsky , I. V. Yurkevich

We describe the crossover from generalized hydrodynamics to conventional hydrodynamics in nearly integrable systems. Integrable systems have infinitely many conserved quantities, which spread ballistically in general. When integrability is…

统计力学 · 物理学 2020-05-13 Aaron J. Friedman , Sarang Gopalakrishnan , Romain Vasseur

We study the diffusion of a tracer particle driven out-of-equilibrium by an external force and traveling in a dense environment of arbitrary density. The system evolves on a discrete lattice and its stochastic dynamics is described by a…

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