Recently reported giant anisotropy in the longitudinal resistivity of a 2D electron system with valence Landau level index N≥2 has been interpreted as a signal of unidirectional charge density wave (UCDW) ground states. We report on detailed Hartree-Fock calculations of the UCDW orientation energy induced by a tilted magnetic field. We find that for current experimental samples stripes are oriented perpendicular to the in-plane field, consistent with experiment. For wider 2D electron systems we predict tilt-induced stripe states with variable anisotropy energy sign.
@article{arxiv.cond-mat/9905353,
title = {Field-tilt Anisotropy Energy in Quantum Hall Stripe States},
author = {T. Jungwirth and A. H. MacDonald and L. Smrcka and S. M. Girvin},
journal= {arXiv preprint arXiv:cond-mat/9905353},
year = {2009}
}