| Numéro |
J. Phys. IV France
Volume 131, December 2005
|
|
|---|---|---|
| Page(s) | 217 - 220 | |
| DOI | https://doi.org/10.1051/jp4:2005131053 | |
| Publié en ligne | 18 janvier 2006 | |
International Workshop on Electronic Crystals
S. Brazovskii, P. Monceau and N. Kirova
J. Phys. IV France 131 (2005) 217-220
DOI: 10.1051/jp4:2005131053
University of California San Diego, Department of Physics, 9500 Gilman Drive, La Jolla, CA 92009, USA
© EDP Sciences 2005
S. Brazovskii, P. Monceau and N. Kirova
J. Phys. IV France 131 (2005) 217-220
DOI: 10.1051/jp4:2005131053
Exchange coupling in quantum rings and wires in the Wigner-crystal limit
M.M. Fogler and E. PivovarovUniversity of California San Diego, Department of Physics, 9500 Gilman Drive, La Jolla, CA 92009, USA
Abstract
We present a controlled method for computing the exchange coupling in strongly correlated
one-dimensional electron systems. The asymptotically exact relation between the exchange
constant and the pair-correlation function of spinless electrons is derived. Explicit
results are obtained for thin quantum rings with realistic Coulomb interactions, by
calculating this function via a many-body instanton approach.
© EDP Sciences 2005