Aharonov-Casher Effect in Wigner Crystal Exchange Interactions
Mesoscale and Nanoscale Physics
2009-03-23 v2 Strongly Correlated Electrons
Abstract
We theoretically study the effects of spin-orbit coupling on spin exchange in a low-density Wigner crystal. In addition to the familiar antiferromagnetic Heisenberg exchange, we find general anisotropic interactions in spin space if the exchange paths allowed by the crystal structure form loops in real space. In particular, it is shown that the two-electron exchange interaction can acquire ferromagnetic character.
Keywords
Cite
@article{arxiv.0809.0598,
title = {Aharonov-Casher Effect in Wigner Crystal Exchange Interactions},
author = {Yaroslav Tserkovnyak and Markus Kindermann},
journal= {arXiv preprint arXiv:0809.0598},
year = {2009}
}
Comments
4 pages, 1 figure