Spin dynamics of hot excitons in diluted magnetic semiconductors with spin-orbit interaction
Mesoscale and Nanoscale Physics
2019-07-30 v3
Abstract
We explore the impact of a Rashba-type spin-orbit interaction in the conduction band on the spin dynamics of hot excitons in diluted magnetic semiconductor quantum wells. In materials with strong spin-orbit coupling, we identify parameter regimes where spin-orbit effects greatly accelerate the spin decay and even change the dynamics qualitatively in the form of damped oscillations. Furthermore, we show that the application of a small external magnetic field can be used to either mitigate the influence of spin-orbit coupling or entirely remove its effects for fields above a material-dependent threshold.
Keywords
Cite
@article{arxiv.1905.07947,
title = {Spin dynamics of hot excitons in diluted magnetic semiconductors with spin-orbit interaction},
author = {Florian Ungar and Pablo Ignacio Tamborenea and Vollrath Martin Axt},
journal= {arXiv preprint arXiv:1905.07947},
year = {2019}
}
Comments
9 pages, 5 figures