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Title: Spin-orbit interaction in multiple quantum wells

Abstract

In this paper, we investigate how the structure of multiple quantum wells affects spin-orbit interactions. To increase the interface-related Rashba spin splitting and the strength of the interface-related Rashba spin-orbit interaction, we designed three kinds of multiple quantum wells. We demonstrate that the structure of the multiple quantum wells strongly affected the interface-related Rashba spin-orbit interaction, increasing the interface-related Rashba spin splitting to up to 26% larger in multiple quantum wells than in a stepped quantum well. We also show that the cubic Dresselhaus spin-orbit interaction similarly influenced the spin relaxation time of multiple quantum wells and that of a stepped quantum well. The increase in the interface-related Rashba spin splitting originates from the relationship between interface-related Rashba spin splitting and electron probability density. Our results suggest that multiple quantum wells can be good candidates for spintronic devices.

Authors:
 [1]
  1. Physics Department, Zhejiang Normal University, Zhejiang 321004 (China)
Publication Date:
OSTI Identifier:
22399205
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRON DENSITY; ELECTRONS; INTERFACES; L-S COUPLING; PROBABILITY; QUANTUM WELLS; RELAXATION TIME; SPIN

Citation Formats

Hao, Ya-Fei, E-mail: haoyafei@zjnu.cn. Spin-orbit interaction in multiple quantum wells. United States: N. p., 2015. Web. doi:10.1063/1.4905303.
Hao, Ya-Fei, E-mail: haoyafei@zjnu.cn. Spin-orbit interaction in multiple quantum wells. United States. doi:10.1063/1.4905303.
Hao, Ya-Fei, E-mail: haoyafei@zjnu.cn. Wed . "Spin-orbit interaction in multiple quantum wells". United States. doi:10.1063/1.4905303.
@article{osti_22399205,
title = {Spin-orbit interaction in multiple quantum wells},
author = {Hao, Ya-Fei, E-mail: haoyafei@zjnu.cn},
abstractNote = {In this paper, we investigate how the structure of multiple quantum wells affects spin-orbit interactions. To increase the interface-related Rashba spin splitting and the strength of the interface-related Rashba spin-orbit interaction, we designed three kinds of multiple quantum wells. We demonstrate that the structure of the multiple quantum wells strongly affected the interface-related Rashba spin-orbit interaction, increasing the interface-related Rashba spin splitting to up to 26% larger in multiple quantum wells than in a stepped quantum well. We also show that the cubic Dresselhaus spin-orbit interaction similarly influenced the spin relaxation time of multiple quantum wells and that of a stepped quantum well. The increase in the interface-related Rashba spin splitting originates from the relationship between interface-related Rashba spin splitting and electron probability density. Our results suggest that multiple quantum wells can be good candidates for spintronic devices.},
doi = {10.1063/1.4905303},
journal = {Journal of Applied Physics},
number = 1,
volume = 117,
place = {United States},
year = {Wed Jan 07 00:00:00 EST 2015},
month = {Wed Jan 07 00:00:00 EST 2015}
}