THE ELECTRODYNAMIC RESPONSE OF K3C60 AND RB3C60 SINGLE-CRYSTALS

Authors
DEGIORGI L BRICENO G FUHRER MS ZETTL A WACHTER P NICOL EJ
Citation
L. Degiorgi et al., THE ELECTRODYNAMIC RESPONSE OF K3C60 AND RB3C60 SINGLE-CRYSTALS, Synthetic metals, 70(1-3), 1995, pp. 1325-1327
Citations number
5
Categorie Soggetti
Physics, Condensed Matter","Metallurgy & Metallurigical Engineering
Journal title
Synthetic metals → ACNP
ISSN journal
03796779
Volume
70
Issue
1-3
Year of publication
1995
Pages
1325 - 1327
Database
ISI
SICI code
0379-6779(1995)70:1-3<1325:TEROKA>2.0.ZU;2-3
Abstract
We present the optical response of K3C60 and Rb3C60 single crystals in their normal and superconducting phase. Above T-c the optical conduct ivity is characterized by two components: a Crude one due to the free charge carriers and a mid-infrared absorption. Below T-c the data clea rly indicates a superconducting gap in agreement with the weak couplin g limit of the BCS theory, suggesting furthermore that high frequency intramolecular phonon modes are relevant for the pairing mechanism.