Temperature Dependence of Rashba Spin-orbit Coupling in Quantum Wells
P. S. Eldridge, W. J. H. Leyland, P. G. Lagoudakis, O. Z. Karimov, M., Henini, D. Taylor, R. T. Phillips, R. T. Harley
TL;DR
This study investigates how temperature affects the Rashba spin-orbit coupling in GaAs/AlGaAs quantum wells, revealing an unexpected temperature dependence that highlights the significance of higher-order Rashba terms.
Contribution
It provides the first all-optical measurement of Rashba spin-orbit interaction in (110)-oriented quantum wells and uncovers the temperature-dependent behavior of Rashba coupling.
Findings
Rashba spin-orbit interaction strength varies unexpectedly with temperature.
Higher-order Rashba terms are significant and often neglected.
Crystallographic orientation enables disentangling Rashba and Dresselhaus contributions.
Abstract
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.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsQuantum and electron transport phenomena · Semiconductor Quantum Structures and Devices · Topological Materials and Phenomena