BCS THEORY AND ISOTOPE EFFECT OF QUASI-ZERO-DIMENSIONAL SUPERCONDUCTORS NEAR THE MOTT TRANSITION

Citation
S. Charfikaddour et M. Heritier, BCS THEORY AND ISOTOPE EFFECT OF QUASI-ZERO-DIMENSIONAL SUPERCONDUCTORS NEAR THE MOTT TRANSITION, Synthetic metals, 57(2-3), 1993, pp. 4225-4230
Citations number
14
Categorie Soggetti
Physics, Condensed Matter","Metallurgy & Mining
Journal title
ISSN journal
03796779
Volume
57
Issue
2-3
Year of publication
1993
Pages
4225 - 4230
Database
ISI
SICI code
0379-6779(1993)57:2-3<4225:BTAIEO>2.0.ZU;2-L
Abstract
We calculate the B.C.S superconducting critical temperature of weakly coupled molecular levels as a function of the bandwidth B when the Deb ye energy omega(D) has the same order of magnitude is B, a case corres ponding to the Fullerenes, where B approximately 0.3 eV. For such a na rrow band, electron correlations should induce a pseudogap in the dens ity of states, leading to unusual behaviour of various quantities such as the isotope effect. These singular properties might disappear unde r strong enough pressure.