Anomalous pressure dependence of optical reflectivity in the superconductor Ba0.6K0.4BiO3

Brian P. Bonner; Robin Reichlin; Sue Martin; H. B. Radousky; T. J. Folkerts; R. N. Shelton

doi:10.1103/PhysRevB.41.11576

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Anomalous pressure dependence of optical reflectivity in the superconductor Ba0.6K0.4BiO3

Brian P. Bonner, Robin Reichlin, Sue Martin, H. B. Radousky, T. J. Folkerts, R. N. Shelton

DOI 10.1103/PhysRevB.41.11576 · Physical Review B

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Abstract

The pressure dependence of visible and near-infrared reflectivity of the superconducting compound Ba0.6K0.4BiO3 has been measured to 40 GPa at room temperature. The reflectivity decreases dramatically up to the maximum applied pressure, in marked contrast to copper oxide–based high-Tc superconducting materials.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Ba0.6K0.4BiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	28	Pressure unresolved	onset
Ba0.6K0.4BiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	30	Pressure not reported	unknown