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相关论文: Probing the Rashba effect via the induced magnetiz…

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A microscopic expression of the residual electrical resistivity tensor is derived in linear response theory for Rashba electrons scattering at a magnetic impurity with cylindrical or non-cylindrical potential. The behavior of the…

介观与纳米尺度物理 · 物理学 2016-09-29 Juba Bouaziz , Samir Lounis , Stefan Blügel , Hiroshi Ishida

The effect of Rashba spin-orbit (SO) interaction on the hole states in a quantum dot is studied in the presence of an external magnetic field. We demonstrate here that the Rashba SO coupling has a profound effect on the energy spectrum of…

介观与纳米尺度物理 · 物理学 2009-10-27 Aram Manaselyan , Tapash Chakraborty

Associated with spin-orbit coupling (SOC) and inversion symmetry breaking, Rashba spin polarization opens a new avenue for spintronic applications that was previously limited to ordinary magnets. However, spin polarization effects in actual…

计算物理 · 物理学 2016-10-12 Qihang Liu , Xiuwen Zhang , J. A. Waugh , D. S. Dessau , Alex Zunger

The Kondo effect is a key many-body phenomenon in condensed matter physics. It concerns the interaction between a localised spin and free electrons. Discovered in metals containing small amounts of magnetic impurities, it is now a…

介观与纳米尺度物理 · 物理学 2017-05-10 S. Sasaki , S. De Franceschi , J. M. Elzerman , W. G. van der Wiel , M. Eto , S. Tarucha , L. P. Kouwenhoven

We study the fate of a spin-1/2 impurity in the itinerant antiferromagnetic metallic phase via a renormalization group analysis and a variational calculation. The local moment - conduction electron interaction hamiltonian in an…

强关联电子 · 物理学 2008-06-05 Vivek Aji , Chandra Varma , Ilya Vekhter

The effective interaction between magnetic impurities in metals that can lead to various magnetic ground states often competes with a tendency for electrons near impurities to screen the local moment (Kondo effect). The simplest system…

介观与纳米尺度物理 · 物理学 2009-11-10 N. J. Craig , J. M. Taylor , E. A. Lester , C. M. Marcus , M. P. Hanson , A. C. Gossard

We report electronic structure calculations of an iron impurity in gold host. The spin, orbital and dipole magnetic moments were investigated using the LDA+$U$ correlated band theory. We show that the {\em around-mean-field}-LDA+$U$…

材料科学 · 物理学 2012-03-01 Alexander B. Shick , Jindrich Kolorenc , Vaclav Janis , Alexander I. Lichtenstein

A general technique for the study of embedded quantum graphs with magnetic fields and spin-orbit interaction is presented. The analysis is used to understand the contribution of Rashba constant to the extreme localization induced by…

数学物理 · 物理学 2007-05-23 Konstantin Pankrashkin

We use spin- and angle-resolved photoemission spectroscopy (SARPES) combined with polarization-variable laser and investigate the spin-orbit coupling effect under interband hybridization of Rashba spin-split states for the surface alloys…

材料科学 · 物理学 2017-01-26 Ryo Noguchi , Kenta Kuroda , K. Yaji , K. Kobayashi , M. Sakano , A. Harasawa , Takeshi Kondo , F. Komori , S. Shin

We propose a mechanism of spin Hall effect in two-dimensional electron gas with spatially random Rashba spin-orbit interaction. The calculations based on the Kubo formalism and kinetic equation show that in contrast to the constant…

介观与纳米尺度物理 · 物理学 2015-05-20 V. K. Dugaev , M. Inglot , E. Ya. Sherman , J. Barnas

We consider a flux-threaded Aharonov-Bohm ring with an embedded quantum dot coupled to two normal leads. The local Rashba spin-orbit interaction acting on the dot electrons leads to a spin-dependent phase factor in addition to the…

介观与纳米尺度物理 · 物理学 2015-03-14 Jong Soo Lim , Mircea Crisan , David Sanchez , Rosa Lopez , Ioan Grosu

It is often assumed that in a superconductor without spin-triplet pairing, the formation of unconventional spin-triplet densities requires the spin-orbit interaction in combination with either broken inversion symmetry or broken…

We measure transport through gold grain quantum dots fabricated using electromigration, with magnetic impurities in the leads. A Kondo interaction is observed between dot and leads, but the presence of magnetic impurities results in a…

介观与纳米尺度物理 · 物理学 2009-11-11 H. B. Heersche , Z. de Groot , J. A. Folk , L. P. Kouwenhoven , H. S. J. van der Zant , A. A. Houck , J. Labaziewicz , I. L. Chuang

We study the conductance through a ring described by the Hubbard model (such as an array of quantum dots), threaded by a magnetic flux and subject to Rashba spin-orbit coupling (SOC). We develop a formalism that is able to describe the…

强关联电子 · 物理学 2009-02-10 A. M. Lobos , A. A. Aligia

Motivated by recent experiments, here we study the indirect interactions between magnetic impurities deposited on top of a clean Pb(110) surface induced by the underlying conduction electrons. Our approach makes use of \textit{ab initio}…

介观与纳米尺度物理 · 物理学 2019-12-18 Alejandro Rébola , Alejandro M. Lobos

A magnetic atomic impurity inside a superconductor locally distorts superconductivity. They scatter Cooper pairs as a potential with broken time-reversal symmetry, what leads to localized bound states with subgap excitation energies, named…

We investigate the Kondo effect in two-dimensional disordered electron systems using a finite-temperature quantum Monte Carlo method. Depending on the position of a magnetic impurity, the local moment is screened or unscreened by the spin…

强关联电子 · 物理学 2009-11-07 Takuma Ohashi , Sei-ichiro Suga

We utilize variational method to investigate the Kondo screening of a spin-1/2 magnetic impurity in tilted Dirac surface states with the Dirac cone tilted along the $k_y$-axis. We mainly study about the effect of the tilting term on the…

强关联电子 · 物理学 2018-01-22 Jin-Hua Sun , Lu-Ji Wang , Xing-Tai Hu , Lin Li , Dong-Hui Xu

We report on the quantum interference and spin accumulation on double quantum dots with Rashba spin-orbit coupling and electron-electron interaction, based on the Keldysh nonequilibrium Green function formalism. It is shown that Rashba…

介观与纳米尺度物理 · 物理学 2009-11-13 Kuo-Wei Chen , Ching-Ray Chang

We consider the effect of the Rashba spin-orbital interaction and space charge in a ferromagnet-insulator/semiconductor/insulator-ferromagnet junction where the spin current is severely affected by the doping, band structure and charge…

介观与纳米尺度物理 · 物理学 2009-11-10 Wei Wu , Jinbin Li , Yue Yu , S. T. Chui