High temperature gate control of quantum well spin memory

Preprint

16 May 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0305396

Abstract

Time-resolved optical measurements in (110)-oriented GaAs/AlGaAs quantum wells show a ten-fold increase of the spin-relaxation rate as a function of applied electric field from 20 to 80 kV cm-1 at 170 K and indicate a similar variation at 300 K, in agreement with calculations based on the Rashba effect. Spin relaxation is almost field-independent below 20 kV cm-1 reflecting quantum well interface asymmetry. The results indicate the achievability of voltage-gateable spin-memory time longer than 3 ns simultaneously with high electron mobility.

Keywords

CONTROL OF QUANTUM
ELECTRON MOBILITY
HIGH TEMPERATURE
SPIN MEMORY TIME
ELECTRIC FIELD
QUANTUM WELL
KV CM

All Related Versions

Version 1, 2003-05-16, ArXiv
Published version: Physical Review Letters, 91 (24), 246601.

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