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Spin-orbit coupling in two-dimensional systems is usually characterized by Rashba and Dresselhaus spin-orbit coupling (SOC) linear in the wave vector. However, there is a growing class of materials which instead support dominant SOC cubic…

介观与纳米尺度物理 · 物理学 2021-05-03 Mohammad Alidoust , Chenghao Shen , Igor Zutic

Topological nodal-line semimetals are predicted to exhibit unique drumhead-like surface states (DSS). Yet, a direct detection of such states remains a challenge. Here, we propose spin-resolved transport in a junction between a normal metal…

介观与纳米尺度物理 · 物理学 2018-10-19 Wei Chen , Kun Luo , Lin Li , Oded Zilberberg

We study spin dependent phonomena in superconducting junctions in both ballistic and diffusive regimes. For ballistic junctions we study both ferromagnet / $s$- and d-wave superconductor junctions and two dimensional electron gas / s-wave…

超导电性 · 物理学 2009-11-11 T. Yokoyama , Y. Tanaka

Spin-orbit coupling effects occurring in non-centrosymmetric materials are known to be responsible for non-trivial spin configurations and a number of emergent physical phenomena. Ferroelectric materials may be especially interesting in…

材料科学 · 物理学 2017-07-05 L. L. Tao , Tula R. Paudel , Alexey A. Kovalev , Evgeny Y. Tsymbal

Spin drag measurements were performed in a two-dimensional electron system set close to the crossed spin helix regime and coupled by strong intersubband scattering. In a sample with uncommon combination of long spin lifetime and high charge…

介观与纳米尺度物理 · 物理学 2017-07-05 M. Luengo-Kovac , F. C. D. Moraes , G. J. Ferreira , A. S. L. Ribeiro , G. M. Gusev , A. K. Bakarov , V. Sih , F. G. G. Hernandez

Using the tight-binding approximation and the nonequilibrium Green's function approach, we investigate the coherent spin-dependent transport in planar magnetic junctions consisting of two ferromagnetic (FM) electrodes separated by a…

介观与纳米尺度物理 · 物理学 2009-03-04 Alireza Saffarzadeh , Mahdi Ghorbani Asl

Understanding how the orbital motion of electrons is coupled to the spin degree of freedom in nanoscale systems is central for applications in spin-based electronics and quantum computation. We demonstrate this coupling of spin and orbit in…

Despite intense efforts it has remained unresolved whether and how interfacial spin-orbit coupling (ISOC) affects spin transport across heavy metal (HM)/ferromagnet (FM) interfaces. Here we report conclusive experiment evidence that the…

材料科学 · 物理学 2019-02-27 Lijun Zhu , D. C. Ralph , R. A. Buhrman

The Rashba and Dresselhaus types of spin-orbit coupling are two typical linear coupling forms. We establish the fundamental physics of a model which can be viewed as the double version of the Rashba and Dresselhaus spin-orbit coupling. This…

介观与纳米尺度物理 · 物理学 2022-04-15 Hu Zhang , Lulu Zhao , Chendong Jin , Ruqian Lian , Peng-Lai Gong , RuiNing Wang , JiangLong Wang , Xing-Qiang Shi

The recent experimental discovery of three-dimensional (3D) materials hosting a strong Rashba spin-orbit coupling calls for the theoretical investigation of their transport properties. Here we study the zero temperature dc conductivity of a…

强关联电子 · 物理学 2017-06-01 Valentina Brosco , Claudio Grimaldi

We report a theoretical investigation on spin-Hall conductance fluctuation of disordered four terminal devices in the presence of Rashba or/and Dresselhaus spin-orbital interactions in two dimensions. As a function of disorder, the…

介观与纳米尺度物理 · 物理学 2007-05-23 Wei Ren , Zhenhua Qiao , Jian Wang , Qingfeng Sun , Hong Guo

In our JunPy package, we have combined the first-principles calculated self-consistent Hamiltonian with divide-and-conquer technique to successfully determine the magnetic anisotropy (MA) in an Fe/MgO/Fe magnetic tunnel junction (MTJ). We…

材料科学 · 物理学 2023-08-21 Bao-Huei Huang , Yu-Hsiang Fu , Chao-Cheng Kaun , Yu-Hui Tang

We report on a theoretical study of spin dynamics of an ensemble of spin-polarized electrons injected in a diffusive microchannel with linear Rashba and Dresselhaus spin-orbit coupling. We explore the dependence of the spin-precession and…

介观与纳米尺度物理 · 物理学 2010-11-23 Liviu P. Zarbo , Jairo Sinova , Irena Knezevic , J. Wunderlich , T. Jungwirth

We study spin-dependent conductance in a system composed of a ferromagnetic (FM) Scanning Tunneling Microscope (STM) tip coupled to a metallic host surface with an adatom. The Kondo resonance is taken into account via the Doniach-Sunjic…

强关联电子 · 物理学 2015-05-13 A. C. Seridonio , F. M. Souza , J. Del Nero , I. A. Shelykh

For spin-polarized junctions of ferromagnetically contacting multiple conductive paths, such as ferromagnet (FM)/atomic wires/FM and FM/carbon nanotubes/FM junctions, we theoretically investigate spin-dependent transport to elucidate the…

介观与纳米尺度物理 · 物理学 2007-05-23 Satoshi Kokado , Kikuo Harigaya

The effect of spin currents on the magnetic order of insulating antiferromagnets (AFMs) is of fundamental interest and can enable new applications. Toward this goal, characterizing the spin-orbit torques (SOT) associated with AFM/heavy…

介观与纳米尺度物理 · 物理学 2022-06-22 Egecan Cogulu , Hantao Zhang , Nahuel N. Statuto , Yang Cheng , Fengyuan Yang , Ran Cheng , Andrew D. Kent

We present calculations of the frequency-dependent spin susceptibility tensor of a two-dimensional electron gas with competing Rashba and Dresselhaus spin-orbit interaction. It is shown that the interplay between both types of spin-orbit…

介观与纳米尺度物理 · 物理学 2015-05-13 Catalina López-Bastidas , Jesús A. Maytorena , Francisco Mireles

We study conductance spectroscopy of a two-dimensional junction between a normal metal and a strongly-correlated superconductor in an applied magnetic field in the Pauli limit. Depending on the field strength the superconductor is either in…

强关联电子 · 物理学 2014-07-24 Jan Kaczmarczyk , Mariusz Sadzikowski , Jozef Spałek

We studied the response of a ferromagnet-insulator-normal metal tunnel structure under an external oscillating radio frequency (R.F.) magnetic field. The D. C. voltage across the junction is calculated and is found not to decrease despite…

材料科学 · 物理学 2009-11-13 S. T. Chui , Z. F. Lin

We propose a method to determine the relative strength of Rashba and Dresselhaus spin-orbit interaction from transport measurements without the need of fitting parameters. To this end, we make use of the conductance anisotropy in narrow…

介观与纳米尺度物理 · 物理学 2009-01-22 Matthias Scheid , Makoto Kohda , Yoji Kunihashi , Klaus Richter , Junsaku Nitta