Magnetotunnelling in resonant tunnelling structures with spin-orbit interaction
Abstract
Magnetotunnelling spectroscopy of resonant tunnelling structures provides information on the nature of the two-dimensional electron gas in the well. We describe a model based on nonequilibrium Green's functions that allows for a comprehensive study of the density of states, tunnelling currents and current spin polarization. The investigated effects include the electron-phonon interaction, interface roughness scattering, Zeeman effect and the Rashba spin-orbit interaction. A qualitative agreement with experimental data is found regarding the satellite peaks. The spin polarization is predicted to be larger than ten percent for magnetic fields above 2 Tesla and having a structure even at the satellite peaks. The Rashba effect is confirmed to be observable as a beating pattern in the density of states but found to be too small to affect the tunnelling current.
Cite
@article{arxiv.1106.5432,
title = {Magnetotunnelling in resonant tunnelling structures with spin-orbit interaction},
author = {Goran Isić and Dragan Indjin and Vitomir Milanović and Jelena Radovanović and Zoran Ikonić and Paul Harrison},
journal= {arXiv preprint arXiv:1106.5432},
year = {2015}
}
Comments
31 pages, 11 figures