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New beta-Pyrochlore Oxide Superconductor CsOs2O6

Shigeki Yonezawa·Yuji Muraoka·Zenji Hiroi
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Abstract

The discovery of a new beta-pyrochlore oxide superconductor CsOs2O6 with Tc = 3.3 K is reported. It is the third superconductor in the family of beta-pyrochlore oxides, following KOs2O6 with Tc = 9.6 K and RbOs2O6 with Tc = 6.3 K. The Tc of this series decreases with increasing the ionic radius of alkaline metal ions, imposing negative chemical pressure upon the Os pyrochlore lattice.

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Shigeki Yonezawa, Yuji Muraoka, Zenji Hiroi. 2004-04-09. New beta-Pyrochlore Oxide Superconductor CsOs2O6. https://doi.org/10.1143/jpsj.73.1655

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