Localization of spinwaves in the quantum Hall ferromagnet
Mesoscale and Nanoscale Physics
2009-10-31 v1
Abstract
The quantum Hall ferromagnet at filling fraction has some unusual properties due to the remarkable identity between the topological density of a spin distortion and the associated electrical charge density. We investigate the localization of spinwaves by coupling to a scalar disorder potential via their topological density. A low energy description of the system in terms of a non-linear sigma model of unitary supermatrices is derived. All states of this model are localized in two dimensions. A possible experimental signature of these effects in photo-luminescence is suggested.
Keywords
Cite
@article{arxiv.cond-mat/9809406,
title = {Localization of spinwaves in the quantum Hall ferromagnet},
author = {A. G. Green},
journal= {arXiv preprint arXiv:cond-mat/9809406},
year = {2009}
}
Comments
6 pages, revtex, 11 pictures included in the text