New pyrochlore oxide superconductor RbOs2O6

Shigeki Yonezawa, Yuji Muraoka, Yoshitaka Matsushita, Zenji Hiroi

Research output: Contribution to journalArticlepeer-review

149 Citations (Scopus)


We report the discovery of a new pyrochlore oxide superconductor RbOs 2O6. The compound crystallizes in the same β-pyrochlore structure as the recently discovered superconductor KOs 2O6, where Os atoms form a corner-sharing tetrahedral network called the pyrochlore lattice with Rb or K atoms in the cage. Resistivity, magnetic susceptibility and specific heat measurements on polycrystalline samples evidence a bulk superconductivity with Tc = 6.3 K.

Original languageEnglish
Pages (from-to)819-821
Number of pages3
Journaljournal of the physical society of japan
Issue number4
Publication statusPublished - Apr 2004
Externally publishedYes


  • Pyrochlore oxide
  • Superconductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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