Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1998-07-24
Physics
Condensed Matter
Strongly Correlated Electrons
4 RevTeX pages, 4 EPS figures embedded using psfig; submitted to JETP Letters
Scientific paper
10.1134/1.567874
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.
Dolgopolov V. T.
Gantmakher V. F.
Golubkov M. V.
Shashkin Alexey
Tsydynzhapov G. E.
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