| Issue |
J. Phys. I France
Volume 6, Number 1, January 1996
|
|
|---|---|---|
| Page(s) | 1 - 4 | |
| DOI | https://doi.org/10.1051/jp1:1996128 | |
DOI: 10.1051/jp1:1996128
J. Phys. I France 6 (1996) 1-4
Laboratoire de Physique des Solides associé au CNRS, Université Paris-Sud, 91405 Orsay, France
(Received 20 September 1995, accepted 23 October 1995)
© Les Editions de Physique 1996
J. Phys. I France 6 (1996) 1-4
Persistent Current of Interacting Electrons: a Simple Hartree-Fock Picture
G. MontambauxLaboratoire de Physique des Solides associé au CNRS, Université Paris-Sud, 91405 Orsay, France
(Received 20 September 1995, accepted 23 October 1995)
Abstract
The average persistent current
of diffusive electrons in the Hartree-Fock
approximation is derived in a simple non-diagrammatic picture. The Fourier expansion directly
reflects the winding number decomposition of the diffusive motion around the ring. One recovers
the results of Ambegaokar and Eckern, and Schmid. Moreover one finds an expression for
which is valid beyond the diffusive regime.
© Les Editions de Physique 1996