Superconductivity in germanium clathrate ${Ba}_{8} {Ga}_{16} {Ge}_{30}$

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1 August 1999

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 60 (5) , 3064-3067
https://doi.org/10.1103/physrevb.60.3064

Abstract

We report type-II superconductivity in the germanium clathrate compound,

{Ba}_{8} {Ga}_{16} {Ge}_{30}

with critical temperature,

T_{c} = 7.5 \pm 0.2 K

as determined by magnetic susceptibility measurements. Barium atoms occupy cage voids provided by a covalent

{sp}^{3}

hybridized network of gallium and germanium. Magnetic susceptibility and transport measurements were used to characterize the transition.

Keywords

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