Energy Spectrum for Neutral Collective Excitations in Striped Hall States
arXiv:cond-mat/0209377
Abstract
Neutral collective excitations in the striped Hall state are studied by using the single mode approximation and Hartree-Fock approximation at the half-filled third and fourth Landau level. We find that the spectrum includes anisotropic NG modes and periodic line nodes.
arXiv comment8 pages, 3 figures, SemiMag15 Oxford