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VOLUME 14 (1971) | ISSUE 1 | PAGE 18
Superconductivity of Gallium Arsenide at High Pressures
The semiconducting compound GaAs, which has a lattice of the type ZnS at pressure ρ = 0, goes over into the metallic state at ρ = 250 kbar and room tern perature [1]. A number of III V compounds having a similar crystal structure (InSb, GaSb, and AlSb) go over into metallic modifications with the struc ture of white tin at respective pressures 22.5, 70, and 125 kbar. All these modifications are superconducting [2-4]. One might expect the metallic phas of GaAs to be likewise superconducting.