Microscopic Theory of Skyrmions in Quantum Hall Ferromagnets
Mesoscale and Nanoscale Physics
2007-05-23 v1 Strongly Correlated Electrons
High Energy Physics - Theory
Abstract
We present a microscopic theory of skyrmions in the monolayer quantum Hall ferromagnet. It is a peculiar feature of the system that the number density and the spin density are entangled intrinsically as dictated by the W algebra. The skyrmion and antiskyrmion states are constructed as W-rotated states of the hole-excited and electron-excited states, respectively. They are spin textures accompanied with density modulation that decreases the Coulomb energy. We calculate their excitation energy as a function of the Zeeman gap and compared the result with experimental data.
Cite
@article{arxiv.cond-mat/0509262,
title = {Microscopic Theory of Skyrmions in Quantum Hall Ferromagnets},
author = {G. Tsitsishvili and Z. F. Ezawa},
journal= {arXiv preprint arXiv:cond-mat/0509262},
year = {2007}
}
Comments
15 pages (to be published in PRB)