Zobrazeno 1 - 10
of 453
pro vyhledávání: '"Berkovits R"'
Autor:
Friedman, B., Berkovits, R.
The entanglement entropy distribution of strongly disordered one dimensional spin chains, which are equivalent to spinless fermions at half-filling on a bond (hopping) disordered one-dimensional Anderson model, has been shown to exhibit very distinct
Externí odkaz:
http://arxiv.org/abs/1710.05322
Publikováno v:
Phys. Rev. B 94, 014207 (2016)
Connections between the electron eigenstates and conductivity of one-dimensional disordered electron systems is studied in the framework of the tight-binding model. We show that for weak disorder only part of the states exhibit resonant transmission
Externí odkaz:
http://arxiv.org/abs/1602.05009
Publikováno v:
Nature Comm. 8, 402 (2017)
We use a novel technique to experimentally explore transport properties through a single metallic nanoparticle with variable coupling to electric leads. For strong dot-lead coupling the conductance is an oscillatory function of the gate voltage with
Externí odkaz:
http://arxiv.org/abs/1506.05075
Autor:
Vasserman, A., Berkovits, R.
In this paper we study the persistent current (PC) of a staggered Harper model, close to the half-filling. The Harper model, which is a quasi-periodic system, is different than other one dimensional systems with uncorrelated disorder in the fact that
Externí odkaz:
http://arxiv.org/abs/1502.03228
Systems of quantum dots (QD) connected to leads exhibit periodic conductance peaks as a function of gate voltage arising from the Coulomb blockade effect \cite{review1,review2,review3}. Much effort goes into minimizing the size of QDs and reaching th
Externí odkaz:
http://arxiv.org/abs/0907.4875
Publikováno v:
Phys. Rev. B. 75, 064209 (2007)
The Friedel oscillations caused due to an impurity located at one edge of a disordered interacting quantum wire are calculated numerically. The electron density in the system's ground state is determined using the DMRG method, and the Friedel oscilla
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611217
Driving a first order quantum phase transition by coupling a quantum dot to a 1D charge density wave
Publikováno v:
J. Phys.: Condens. Matter 19, 086215 (2007)
The ground state properties of a one-dimensional system with particle-hole symmetry, consisting of a gate controlled dot coupled to an interacting reservoir, are explored using the numerical DMRG method. It was previously shown that the system's ther
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610543
Publikováno v:
Phys. Rev. B73, 035331 (2006)
We demonstrate that by carefully analyzing the temperature dependent characteristics of the I-V measurements for a given complex system it is possible to determine whether it is composed of a single, double or multiple quantum-dot structure. Our appr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0511271
The spectral statistics of complex networks are numerically studied. The features of the Anderson metal-insulator transition are found to be similar for a wide range of different networks. A metal-insulator transition as a function of the disorder ca
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509275
Publikováno v:
Phys. Rev. B 71, 153301 (2005)
The influence of interactions in a reservoir coupled to a level on the width of the filling as a function of the chemical potential and the position of the level is studied. The density matrix renormalization group (DMRG) method is used to calculate
Externí odkaz:
http://arxiv.org/abs/cond-mat/0410471