scholarly journals Enhancement of Rashba spin–orbit coupling by electron–electron interaction

RSC Advances ◽  
2016 ◽  
Vol 6 (82) ◽  
pp. 78714-78719 ◽  
Author(s):  
Rouhollah Farghadan ◽  
Ali Sehat
Keyword(s):  
Electric Current ◽  
Orbit Coupling ◽  
Electron Interaction ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Output Current ◽  
Rashba Spin ◽  
Magnetic Elements ◽  
Spin Polarized

We studied how the electron–electron interaction enhances the strength of the Rashba spin–orbit coupling and opens the possibility of generating a spin-polarized output current from an unpolarized electric current without any magnetic elements.

SPIN-ORBIT ENHANCED POLARON IN A SINGLE QUANTUM WELL

2011 ◽  
Vol 25 (32) ◽  
pp. 2461-2468
Author(s):  
S. PANDA ◽  
B. K. PANDA
Keyword(s):  
Quantum Well ◽  
Orbit Coupling ◽  
Electron Interaction ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Single Quantum ◽  
Single Quantum Well ◽  
Rashba Spin ◽  
Asymmetric Quantum ◽  
Longitudinal Optic Phonon

The polaronic corrections to the electron energy and effective mass are calculated taking the Rashba spin-orbit coupling in the compositionally asymmetric single quantum well based on heterostructures of narrow gap semiconductors InGaAs and InAs . The electron interaction with the confined longitudinal optic phonon is considered in the Fröhlich form for calculating the polaron properties. In the weak coupling limit, the polaron properties are enhanced by the Rashba spin-orbit coupling in the asymmetric quantum well.

Spin polarization of polaron in quasi-one dimensional organic system

2015 ◽  
Vol 29 (02) ◽  
pp. 1450266 ◽  
Author(s):  
Hong Jiang ◽  
Chao Zhang ◽  
Xuening Hu ◽  
Guichao Hu ◽  
Shijie Xie
Keyword(s):  
Spin Polarization ◽  
Organic Materials ◽  
Orbit Coupling ◽  
Electron Interaction ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Organic System ◽  
Electron Phonon Coupling ◽  
Spin Polarized ◽  
Ssh Model

The spin polarization of polarons in quasi-1D organic materials has been investigated by using the extended Su–Schrieffer–Heeger (SSH) model with spin-orbit coupling. Results show that the polaron is partly spin polarized, and that the electron–electron interaction and spin-orbit coupling compete with each other during the formation of spin polarization. The dependence of spin polarization on electron–phonon coupling is also revealed. Our results demonstrate that spin polarization is well correlated with polaron localization, thus providing useful guidance for exploring magnetic effects in organic materials.

scholarly journals Manipulation of Majorana bound states in proximity to a quantum ring with Rashba coupling

2021 ◽  
Author(s):  
Fabían Gonzalo Medina ◽  
Dunkan Martínez ◽  
Alvaro Díaz-Fernández ◽  
Francisco Domínguez-Adame ◽  
Luis Rosales ◽  
...  
Keyword(s):  
Bound States ◽  
Orbit Coupling ◽  
Quantum Ring ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Persistent Currents ◽  
Zero Modes ◽  
Rashba Spin ◽  
Spin Polarized ◽  
Rashba Coupling

Abstract The quest for Majorana zero modes in the laboratory is an active field of research in condensed matter physics. In this regard, there have been many theoretical proposals; however, their experimental detection remains elusive. In this article, we present a realistic setting by considering a quantum ring with Rashba spin-orbit coupling and threaded by a magnetic flux, in contact with a topological superconducting nanowire. We focus on spin-polarized persistent currents to assess the existence of Majorana zero modes. We find that the Rashba spin-orbit coupling allows for tuning the position of the zero modes and has sizable effects on spin-polarized persistent currents. Our results pave the way towards probing the existence of Majorana zero modes.

Extrinsic Rashba spin–orbit coupling effect on silicene spin polarized field effect transistors

2017 ◽  
Vol 29 (14) ◽  
pp. 145501 ◽  
Author(s):  
Nezhat Pournaghavi ◽  
Mahdi Esmaeilzadeh ◽  
Adib Abrishamifar ◽  
Somaieh Ahmadi
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Coupling Effect ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Rashba Spin ◽  
Spin Polarized
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