Spin edge helices in a perpendicular magnetic field
Mesoscale and Nanoscale Physics
2013-07-29 v2 Quantum Gases
Abstract
We present an exact solution to the problem of the spin edge states in the presence of equal Bychkov-Rashba and Dresselhaus spin-orbit fields in a two-dimensional electron system, restricted by a hard-wall confining potential and exposed to a perpendicular magnetic field. We find that the spectrum of the spin edge states depends critically on the orientation of the sample edges with respect to the crystallographic axes. Such a strikingly different spectral behavior generates new modes of the persistent spin helix-spin edge helices with novel properties, which can be tuned by the applied electric and magnetic fields.
Cite
@article{arxiv.1008.0703,
title = {Spin edge helices in a perpendicular magnetic field},
author = {S. M. Badalyan and J. Fabian},
journal= {arXiv preprint arXiv:1008.0703},
year = {2013}
}
Comments
In press in Physical Review Letters; Revised arguments in the introductory part; 3 figures