Superconductivity-Related Insulating Behavior

G. Sambandamurthy; L. W. Engel; A. Johansson; D. Shahar

doi:10.1103/PhysRevLett.92.107005

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Superconductivity-Related Insulating Behavior

G. Sambandamurthy, L. W. Engel, A. Johansson, D. Shahar

DOI 10.1103/PhysRevLett.92.107005 · Physical Review Letters

T1

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Abstract

We present the results of an experimental study of superconducting, disordered, thin films of amorphous indium oxide. These films can be driven from the superconducting phase to a reentrant insulating state by the application of a perpendicular magnetic field (B). We find that the high-B insulator exhibits activated transport with a characteristic temperature, TI. TI has a maximum value (TIp) that is close to the superconducting transition temperature (Tc) at B=0, suggesting a possible relation between the conduction mechanisms in the superconducting and insulating phases. TIp and Tc display opposite dependences on the disorder strength.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
InO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.5	Pressure not reported	unknown
InO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.27	Pressure not reported	unknown