Critical magnetic fields of amorphous As2Te3 near the insulator-metal transition
Berman I. V., Brandt N. B., Kostyleva I. E., Pavlov S. K., Sidorov V. I., Chudinov S. M.
The fields Hc2 and the currents Jc have been measured near a pressure-induced insulator-metal transition in amorphous As2Te3. A superconductivity appears at a pressure P—70 kbar; the value of Tc increases as the pressure is raised. The large values of (dHc2/dT) Tc ~ 10 kOe/K at low values of Jc indicate that the superconductivity is of a percolation nature.