Far-infrared transmission of superconducting KxC60 films

S. A. FitzGerald; S. G. Kaplan; A. Rosenberg; A. J. Sievers; R. A. S. McMordie

doi:10.1103/PhysRevB.45.10165

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Far-infrared transmission of superconducting KxC60 films

S. A. FitzGerald, S. G. Kaplan, A. Rosenberg, A. J. Sievers, R. A. S. McMordie

DOI 10.1103/PhysRevB.45.10165 · Physical Review B

T1

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Abstract

Far-infrared transmission measurements have been performed on normal and superconducting KxC60 films on Si substrates. The films are prepared by thermal sublimation followed by in situ doping in a vacuum-tight cell. The observed peak in the ratio of the superconducting to normal transmittance near 50 cm−1 is consistent with a distribution of superconducting gaps in the range (2–5)kTc.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
KxC60 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	11	Pressure not reported	zero_resistance
KxC60 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	11	Pressure not reported	onset
Rb3C60 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown