Anisotropic plasmons in a two-dimensional electron gas with spin-orbit interaction
Mesoscale and Nanoscale Physics
2013-05-29 v3
Abstract
Spin-orbit coupling induced anisotropies of plasmon dynamics are investigated in two-dimensional semiconductor structures. The interplay of the linear Bychkov-Rashba and Dresselhaus spin-orbit interactions drastically affects the plasmon spectrum: the dynamical structure factor exhibits variations over several decades, prohibiting plasmon propagation in specific directions. While this plasmon filtering makes the presence of spin-orbit coupling in plasmon dynamics observable, it also offers a control tool for plasmonic devices. Remarkably, if the strengths of the two interactions are equal, not only the anisotropy, but all the traces of the linear spin-orbit coupling in the collective response disappear.
Cite
@article{arxiv.0804.3366,
title = {Anisotropic plasmons in a two-dimensional electron gas with spin-orbit interaction},
author = {S. M. Badalyan and A. Matos-Abiague and G. Vignale and J. Fabian},
journal= {arXiv preprint arXiv:0804.3366},
year = {2013}
}
Comments
4 figures