Spin-orbit interaction in three-dimensionally bounded semiconductor nanostructures
Abstract
The structural inversion asymmetry-induced spin-orbit interaction of conduction band electrons in zinc-blende and wurtzite semiconductor structures is analysed allowing for a three-dimensional (3D) character of the external electric field and variation of the chemical composition. The interaction, taking into account all remote bands perturbatively, is presented with two contributions: a heterointerface term and a term caused by the external electric field. They have generally comparable strength and can be written in a unified manner only for 2D systems, where they can partially cancel each other. For quantum wires and dots composed of wurtzite semiconductors new terms appear, absent in zinc-blende structures, which acquire the standard Rashba form in 2D systems.
Cite
@article{arxiv.1012.5566,
title = {Spin-orbit interaction in three-dimensionally bounded semiconductor nanostructures},
author = {Eduard Takhtamirov and Roderick V. N. Melnik},
journal= {arXiv preprint arXiv:1012.5566},
year = {2010}
}
Comments
18 pages, 1 figure