Resistance spikes and domain wall loops in Ising quantum Hall ferromagnets
Mesoscale and Nanoscale Physics
2009-11-07 v1
Abstract
We explain the recent observation of resistance spikes and hysteretic transport properties in Ising quantum Hall ferromagnets in terms of the unique physics of their domain walls. Self-consistent RPA/Hartree-Fock theory is applied to microscopically determine properties of the ground state and domain-wall excitations. In these systems domain wall loops support one-dimensional electron systems with an effective mass comparable to the bare electron mass and may carry charge. Our theory is able to account quantitatively for the experimental Ising critical temperature and to explain characteristics of the resistive hysteresis loops.
Keywords
Cite
@article{arxiv.cond-mat/0104334,
title = {Resistance spikes and domain wall loops in Ising quantum Hall ferromagnets},
author = {T. Jungwirth and A. H. MacDonald},
journal= {arXiv preprint arXiv:cond-mat/0104334},
year = {2009}
}
Comments
4 pages, 3 figures