Superconductivity in silicon based barium-inclusion clathrates

Rüdiger F.W. Herrmann, Katsumi Tanigaki, Sadanori Kuroshima, Hiroyoshi Suematsu

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47 Citations (Scopus)


Clathrates of type Ba8TMxSi46-x (with TM = Au, Ag, Cu) have been investigated. We report on superconductivity in Ba-inclusion silicon based clathrates when doped with transition metals. It is clarified that the transition metals are necessary in order to form the clathrates as major phases, but they destroy the superconductivity. On lowering the amount of TM, an increase in superconducting fraction has been observed, with a maximum at x≈1. After purification a superconducting fraction of up to 50% was obtained. The critical temperatures range from 5 to 6 K depending on both, x and the type of TM.

Original languageEnglish
Pages (from-to)29-32
Number of pages4
JournalChemical Physics Letters
Issue number1-2
Publication statusPublished - 1998 Jan 30
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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