Far-infrared optical properties of the carbide superconductor Y2C2I2

T. Rõõm; B. Gorshunov; M. Dressel; K. Ahn; R. K. Kremer; A. Simon

doi:10.1103/PhysRevB.66.012510

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Far-infrared optical properties of the carbide superconductor Y2C2I2

T. Rõõm, B. Gorshunov, M. Dressel, K. Ahn, R. K. Kremer, A. Simon

DOI 10.1103/PhysRevB.66.012510 · Physical Review B

T1

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Abstract

The optical properties of the layered superconductor Y2C2I2 (Tc=10 K) have been studied at far-infrared frequencies down to 5 cm−1 and at temperatures from 5 to 15 K, in superconducting and normal states. A clear manifestation of the superconducting transition has been observed in the reflectance spectra and in the Kramers-Kronig derived spectra of conductivity and dielectric permittivity. The normal-state spectra indicate an unusually low scattering rate of the charge carriers.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Y2C2I2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	10.1	Pressure not reported	onset
Y2C2Br0.5I1.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	11.6	Pressure not reported	unknown
Y2C2Br2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	5	Pressure not reported	unknown