Intercalation and high temperature superconductivity of fullerides
Paul Scherrer Institute, Condensed Matter Theory, 5232 Villigen PSI, Switzerland
2 Lawrence Berkeley Laboratory, University of California at Berkeley, CA 94720, USA
Corresponding author: a firstname.lastname@example.org
Published online: 15 March 2002
Intercalation of polyatomic molecules into a superconductor can drastically affect the properties of the compound. A mechanism responsible for a large increase in Tc for such systems is proposed. It explains the recent remarkable observation of high Tc superconductivity in the hole-doped C60/CHX3 (X≡Cl, Br) compounds and the large shift in their Tc upon ClBr substitution. The increase in Tc is due to contribution to the pairing arising from the interaction of electrons with the vibrational manifold of the molecule. The proposed mechanism opens up the possibility to observe a site-selective isotope effect. We also suggest that intercalating CHI3 would further increase the critical temperature to K.
PACS: 74.70.Wz – Fullerenes and related materials / 74.72.-h – High-Tc compounds
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002