Abstract
Pressure-induced high-temperature superconductivity is observed in semiconducting , where and , having a carrier concentration ≃/ at 4.2 K as determined from Hall-effect measurements. Above a threshold pressure ≃7 kbar, superconductivity appears with K/kbar. The maximum superconducting temperature ( K), reached at ∼ 12 kbar, represents the highest pressure-induced in any semiconductor. For kbar, the temperature-dependent resistance appears metallic.
- Received 9 September 1980
DOI:https://doi.org/10.1103/PhysRevLett.46.280
©1981 American Physical Society