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DOE OSTI · 22399205

Spin-orbit interaction in multiple quantum wells

Hao, Ya-Fei
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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.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICSELECTRON DENSITYELECTRONSINTERFACESL-S COUPLINGPROBABILITYQUANTUM WELLSRELAXATION TIMESPIN

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Hao, Ya-Fei. 2015-01-07. Spin-orbit interaction in multiple quantum wells. https://doi.org/10.1063/1.4905303

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