The electronic theory of III-V and II-VI tetrahedral compounds. II. Covalent-metallic or covalent-ionic phase transition under pressure

For pt.I see ibid., vol.11, p.2669 (1978). The covalent-metallic phase transition to the beta -Sn structure or covalent-ionic transition to the NaCl structure of III-V and II-VI zincblende-type covalent compounds are investigated using our perturbation treatment according to the Jones-zone scheme of Heine and Jones (1969). Numerical results of transition pressure, volume discontinuity, transition heat and lattice parameters in the high-pressure phase for these crystals, such as AlSb, GaP, GaAs, GaSb, InP, InAs, InSb, ZnS, ZnSe, ZnTe and CdTe, are discussed together with the observed data.