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相关论文: Two-impurity Kondo problem for correlated electron…

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Quantum impurities exhibit fascinating many-body phenomena when the small interacting impurity changes the physics of a large noninteracting environment. The characterisation of such strongly correlated non-perturbative effects is…

介观与纳米尺度物理 · 物理学 2023-01-16 Lidia Stocker , Stefan H. Sack , Michael S. Ferguson , Oded Zilberberg

We present transport measurements of the Kondo effect in a double quantum dot charged with only one or two electrons, respectively. For the one electron case we observe a surprising quasi-periodic oscillation of the Kondo conductance as a…

介观与纳米尺度物理 · 物理学 2007-05-23 D. M. Schröer , A. K. Hüttel , K. Eberl , S. Ludwig , M. N. Kiselev , B. L. Altshuler

While standard scaling arguments show that a system of non-interacting electrons in two dimensions and in the presence of uncorrelated disorder is insulating, in this work we discuss the case where inter-impurity correlations are included.…

无序系统与神经网络 · 物理学 2009-11-10 M. Hilke

The Kondo effect, a hallmark of strong correlation physics, is characterized by the formation of an extended cloud of singlet states around magnetic impurities at low temperatures. While many implications of the Kondo cloud's existence have…

介观与纳米尺度物理 · 物理学 2021-06-28 André Erpenbeck , Guy Cohen

This document provides detailed descriptions of data acquisition and data analysis in support of the accompanying Article, cond-mat/0610721: Observation of the two-channel Kondo effect. Some of the most intriguing problems in solid state…

介观与纳米尺度物理 · 物理学 2007-05-23 R. M. Potok , I. G. Rau , Hadas Shtrikman , Yuval Oreg , D. Goldhaber-Gordon

This article summarizes our understanding of the Kondo effect in graphene, primarily from a theoretical perspective. We shall describe different ways to create magnetic moments in graphene, either by adatom deposition or via defects. For…

强关联电子 · 物理学 2013-02-18 Lars Fritz , Matthias Vojta

The electron and hole states in a CdTe quantum dot containing a single magnetic impurity in an external magnetic field are investigated, using the multiband approximation which includes the heavy hole-light hole coupling effects. The…

介观与纳米尺度物理 · 物理学 2010-08-10 Aram Manaselyan , Tapash Chakraborty

We consider theoretically a magnetic impurity spin driven by polarized electrons tunneling through a double quantum dot system. Spin blockade effect and spin conservation in the system make the magnetic impurity sufficiently interact with…

介观与纳米尺度物理 · 物理学 2015-11-04 Wenxi Lai , Wen Yang

We give a brief review of the Kondo effect and exactly solve the nonequilibrium Kondo problem at the special point in the parameter space of the model with spin-dependent chemical potentials. Using the obtained solution, we compute several…

强关联电子 · 物理学 2010-10-07 Hosho Katsura

We present theoretical investigation of a single magnetic impurity in a d-wave superconductor using the large N limit. It is shown that the Kondo screening occurs only in the presence of the particle-hole asymmetry. We find analytical…

强关联电子 · 物理学 2007-05-23 Anatoli Polkovnikov

We study the quantum corrections to the conductivity of the two-dimensional disordered interacting electron system in the diffusive regime due to inelastic scattering off rare magnetic impurities. We focus on the case of very different…

介观与纳米尺度物理 · 物理学 2018-07-25 I. S. Burmistrov , E. V. Repin

We present a novel approximation for two interacting magnetic impurities immersed into a noninteracting metallic host. The scheme is based on direct perturbation theory in the hybridization between the impurity and band electrons. This…

强关联电子 · 物理学 2012-04-16 Torben Jabben , Norbert Grewe , Sebastian Schmitt

The entanglement entropy in Kondo impurity systems is studied analytically using conformal field theory. From the impurity contribution to the scaling corrections of the entanglement entropy we extract information about the screening cloud…

强关联电子 · 物理学 2011-08-01 Erik Eriksson , Henrik Johannesson

The dissipaton equations of motion (DEOM) method is one of the most popular methods for simulating quantum impurity systems. In this article, we use DOEM theory to deal with the Kondo problem of the double quantum dots (DQDs) impurity…

量子物理 · 物理学 2023-05-30 Zi-Hao Chen , YiJing Yan

A generalized Anderson model for a magnetic impurity in an interacting one-dimensional electron gas is studied via a mapping onto a classical Coulomb gas. For weak potential scattering, the local-moment parameter regime expands as repulsive…

凝聚态物理 · 物理学 2009-10-28 Avraham Schiller , Kevin Ingersent

Clusters containing a single magnetic impurity were investigated by scanning tunneling microscopy, spectroscopy, and ab initio electronic structure calculations. The Kondo temperature of a Co atom embedded in Cu clusters on Cu(111) exhibits…

材料科学 · 物理学 2009-11-13 N. Neel , J. Kroeger , R. Berndt , T. Wehling , A. Lichtenstein , M. I. Katsnelson

A system consisting of two independently contacted quantum dots with strong electrostatic interaction shows interdot Coulomb blockade when the dots are weakly tunnel coupled to their leads. It is studied experimentally how the blockade can…

强关联电子 · 物理学 2008-11-18 A. Hübel , K. Held , J. Weis , K. v. Klitzing

The free electron Kondo problem can be described by a one-dimensional (1D) model because only the s-wave part of the electronic wave-function is affected by the Kondo coupling. Since only the spin degrees of freedom are involved in the…

强关联电子 · 物理学 2008-03-05 Nicolas Laflorencie , Erik S. Sørensen , Ian Affleck

The problem of interacting electrons moving under the influence of a strong magnetic field in two dimensions on a finite disk is reconsidered. First, the results of exact diagonalizations for up to $N=9$ electrons for Coulomb as well as for…

凝聚态物理 · 物理学 2009-10-22 M. Kasner , W. Apel

The delicate balance of spin-screening and spin-aligning interactions determines many of the peculiar properties of dilute magnetic systems. We study a surface-supported all-organic multi-impurity Kondo spin system at the atomic scale by…

强关联电子 · 物理学 2012-07-25 Stefan Müllegger , Mohammad Rashidi , Michael Fattinger , Reinhold Koch