| Numéro |
J. Phys. I France
Volume 6, Numéro 12, December 1996
|
|
|---|---|---|
| Page(s) | 2175 - 2180 | |
| DOI | https://doi.org/10.1051/jp1:1996213 | |
DOI: 10.1051/jp1:1996213
J. Phys. I France 6 (1996) 2175-2180
Laboratoire de Physique des Solides URA 2 CNRS, Centre Scientifique d'Orsay, Université de Paris-Sud, 91405 Orsay Cedex, France
(Received 26 June 1996, received in final form 12 July 1996, accepted 13 August 1996)
© Les Editions de Physique 1996
J. Phys. I France 6 (1996) 2175-2180
From Weakly to Strongly Correlated Electrons in the Alkali Fulleride Family
W. Victoroff and M. HéritierLaboratoire de Physique des Solides URA 2 CNRS, Centre Scientifique d'Orsay, Université de Paris-Sud, 91405 Orsay Cedex, France
(Received 26 June 1996, received in final form 12 July 1996, accepted 13 August 1996)
Abstract
We discuss the effect of strong electron-vibron interaction and static or dynamic Jahn-Teller distortion on the electronic
properties of the A
nC
60 family, where A is alkali metal and
. Repulsive electron-electron correlations are expected for even
n, but attractive ones for odd
n. Such a model seems able to make compatible weak electron correlations for
n=3 fairly strong correlations for
n=1 and an insulating behavior for
n=2 or 4.
© Les Editions de Physique 1996