Superconductivity and phase stability of selenium at high pressures |
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| Authors: | A.R. Moodenbaugh C.T. Wu R. Viswanathan |
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| Affiliation: | Institute for Pure and Applied Physical Sciences, University of California San Diego, La Jolla, California 92037, U.S.A.;Department of Applied Physics and Information Science, University of California, San Diego, La Jolla, California 92037, U.S.A. |
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| Abstract: | Hexagonal Se shows no indication of a transformation to a metallic, superconducting phase up to 160 kbar. Amorphous Se transforms at about 130 kbar to an unstable metallic, superconducting state which anneals slowly at room temperature toward a non-metallic, non-superconducting phase. Monoclinic Se behaves much like amorphous Se. X-ray diffraction indicates that all samples are in the hexagonal phase after release of pressure. |
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