| Numéro |
J. Phys. IV France
Volume 09, Numéro PR10, December 1999
International Workshop on Electronic CrystalsECRYS-99 |
|
|---|---|---|
| Page(s) | Pr10-227 - Pr10-229 | |
| DOI | https://doi.org/10.1051/jp4:19991057 | |
International Workshop
on Electronic Crystals
ECRYS-99
J. Phys. IV France 09 (1999) Pr10-227-Pr10-229
DOI: 10.1051/jp4:19991057
1 Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055, U.S.A.
2 Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106, U.S.A.
3 Université de Sherbrooke, Département de Physique, Sherbrooke, Québec, Canada J1K 2R1
© EDP Sciences 1999
ECRYS-99
J. Phys. IV France 09 (1999) Pr10-227-Pr10-229
DOI: 10.1051/jp4:19991057
Quantum fluctuations and unlocking of quantum Hall stripes
H.A. Fertig1, 2 and R. Coté31 Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055, U.S.A.
2 Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106, U.S.A.
3 Université de Sherbrooke, Département de Physique, Sherbrooke, Québec, Canada J1K 2R1
Abstract
Stripe ordering is believed to exist in quantum Hall systems in weak magnetic fields, where many Landau levels are occupied. Within mean-field theory such unidirectional CDW states are unstable to the formation of a set of parallel one-dimensional electron crystals that are locked into a two-dimensional crystal by their mutual interactions. Quantum fluctuations are shown to destabilize this state through a Kosterlitz-Thouless transition. The resulting state may be interpreted as a Wigner crystal with mobile vacancies and interstitials included in the groundstate. The expected transport properties are in qualitative agreement with recent experiments.
© EDP Sciences 1999