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Destruction of localized electron pairs above the magnetic-field-driven superconductor-insulator transition in amorphous InO films

V. F. Gantmakher·M. V. Golubkov·V. T. Dolgopolov·G. E. Tsydynzhapov·A. A. Shashkin
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Abstract

We have investigated the field-induced superconductivity-destroying quantum transition in amorphous indium oxide films at low temperatures down to 30 mK. It has been found that, on the high-field side of the transition, the magnetoresistance reaches a maximum and the phase can be insulating as well as metallic. With further increasing magnetic field the film resistance drops and approaches in the high-field limit the resistance value at transition point so that at high fields the metallic phase occurs for both cases. We give a qualitative account of this behavior in terms of field-induced destruction of localized electron pairs.

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V. F. Gantmakher, M. V. Golubkov, V. T. Dolgopolov, G. E. Tsydynzhapov, A. A. Shashkin. 1998-07-25. Destruction of localized electron pairs above the magnetic-field-driven superconductor-insulator transition in amorphous InO films. https://doi.org/10.1134/1.567874

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