Temperature Dependence of Rashba Spin-orbit Coupling in Quantum Wells

Details Temperature Dependence of Rashba Spin-orbit Coupling in Quantum Wells Temperature Dependence of Rashba Spin-orbit Coupling in Quantum Wells

2007-07-30

arxiv.org/abs/0707.4493v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

We perform an all-optical spin-dynamic measurement of the Rashba spin-orbit interaction in (110)-oriented GaAs/AlGaAs quantum wells. The crystallographic direction of quantum confinement allows us to disentangle the contributions to spin-orbit coupling from the structural inversion asymmetry (Rashba term) and the bulk inversion asymmetry. We observe an unexpected temperature dependence of the Rashba spin-orbit interaction strength that signifies the importance of the usually neglected higher-order terms of the Rashba coupling.

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