Spin Splitting Induced Photogalvanic Effect in Quantum Wells
Abstract
A theory of the circular photogalvanic effect caused by spin splitting in quantum wells is developed. Direct interband transitions between the hole and electron size-quantized subbands are considered. The photocurrent excitation spectrum is shown to depend strongly on the form of the spin-orbit interaction. In the case of structure inversion asymmetry induced (Rashba) spin-splitting, the current is a linear function of light frequency near the absorption edge, and for the higher excitation energy the spectrum changes its sign and has a minimum. In contrast, when the bulk inversion asymmetry (Dresselhaus splitting) dominates, the photocurrent edge behavior is parabolic, and then the spectrum is sign-constant and has a maximum.
Cite
@article{arxiv.cond-mat/0208295,
title = {Spin Splitting Induced Photogalvanic Effect in Quantum Wells},
author = {L. E. Golub},
journal= {arXiv preprint arXiv:cond-mat/0208295},
year = {2015}
}
Comments
5 pages, 5 figures