Spin symmetry breaking in bilayer quantum Hall systems
Mesoscale and Nanoscale Physics
2009-10-31 v1
Abstract
Based on the construction of generalized Halperin wave functions, we predict the possible existence of a large class of broken spin symmetry states in bilayer quantum Hall structures, generalizing the recently suggested canted antiferromgnetic phase to many fractional fillings. We develop the appropriate Chern-Simons theory, and establish explicitly that the low-lying neutral excitation is a Goldstone mode and that the charged excitations are bimerons with continuously tunable (through the canted antiferromagnetic order parameter) electric charge on the individual merons.
Cite
@article{arxiv.cond-mat/9907107,
title = {Spin symmetry breaking in bilayer quantum Hall systems},
author = {Eugene Demler and Eugene H. Kim and S. Das Sarma},
journal= {arXiv preprint arXiv:cond-mat/9907107},
year = {2009}
}
Comments
4 pages