The electrodynamic response of K3C60 and Rb3C60 single crystals

L. Degiorgi, G. Briceno, M. S. Fuhrer, A. Zettl, P. Wachter, E. J. Nicol

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We present the optical response of K3C60 and Rb3C60 single crystals in their normal and superconducting phase. Above Tc the optical conductivity is characterized by two components: a Drude one due to the free charge carriers and a mid-infrared absorption. Below Tc the data clearly indicates a superconducting gap in agreement with the weak coupling limit of the BCS theory, suggesting furthermore that high frequency intramolecular phonon modes are relevant for the pairing mechanism.

Original languageEnglish
Pages (from-to)1325-1327
Number of pages3
JournalSynthetic Metals
Issue number1-3
Publication statusPublished - 15 Mar 1995
Externally publishedYes

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