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VOLUME 57 (1993) | ISSUE 6 | PAGE 373
Mutual conversions between the superconducting and insulating phases in metastable high-resistance states of the alloy Ga50Sb50
The temperature dependence of the resistance, R{ T), of the alloy GaSb has been measured in various stages of the transition of the metastable high-pressure metallic phase into the disordered insulating state. These stages span a range of more than eight orders of magnitude in terms of the absolute value of R. In the low-resistance states of the sample, a superconducting transition is observed at Τ = 4.6 К. In the high-resistance states, this transition is replaced by a sharp increase in the resistance, i.e., by a transition to an insulating state, at the same temperature.