Rashba Spin-Orbit Coupling Probed by the Weak Antilocalization Analysis in InAlAs/InGaAs/InAlAs Quantum Wells as a Function of Quantum Well Asymmetry
Year: 2002
Type: article
Abstract: We have investigated the values of the Rashba spin-orbit coupling constant $\ensuremath{\alpha}$ in ${\mathrm{In}}_{0.52}{\mathrm{Al}}_{0.48}\mathrm{As}/{\mathrm{In}}_{0.53}{\mathrm{Ga}}_{0.47}\mathrm{As}/{\mathrm{In}}_{0.52}{\mathrm{Al}}_{0.48}\mathrm{As}$ quantum wells using the weak antilocalization (WAL) analysis as a function of the structural inversion asymmetry (SIA) of the quantum wells. We have found that the deduced $\ensuremath{\alpha}$ values have a strong correlation with the degree of SIA of the quantum wells as predicted theoretically. The good agreement between the theoretical and experimental values of $\ensuremath{\alpha}$ suggests that our WAL approach for deducing $\ensuremath{\alpha}$ values provides a useful tool in designing future spintronics devices that utilize the Rashba spin-orbit coupling.
Source: Physical Review Letters
Institutions: NTT (Japan), NTT Basic Research Laboratories
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: Chalmers Tekniska Högskola
OpenAlex ID: W2024186554