Far-infrared transmission study of single-crystal Bi2Sr2Ca1Cu2Ox superconductors

L. Forro; G. L. Carr; G. P. Williams; D. Mandrus; L. Mihaly

doi:10.1103/PhysRevLett.65.1941

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Far-infrared transmission study of single-crystal Bi2Sr2Ca1Cu2Ox superconductors

L. Forro, G. L. Carr, G. P. Williams, D. Mandrus, L. Mihaly

DOI 10.1103/PhysRevLett.65.1941 · Physical Review Letters

T1

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Abstract

We report the infrared transmission of free-standing single crystals of the high-temperature superconductor Bi2Sr2Ca1Cu2Ox, at temperatures between 25 and 300 K and at frequencies covering the range of 1.5kBTc〈ħω<12kBTc. The normal-state Drude relaxation rate follows a linear temperature dependence ħ/τ=3kBT. In the superconducting state there is no indication of a transmission peak, which characterizes a superconducting gap in the optical conductivity. We suggest that a strong pair-breaking interaction is responsible for this null result.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2Ca1Cu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	76	Pressure not reported	unknown
Bi2Sr2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	81	Pressure not reported	unknown
Bi2Sr2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	83	Pressure not reported	unknown