Superconductivity in pseudo-binary silicide SrNi xSi 2-x with AlB 2-type structure

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Abstract

We demonstrate the emergence of superconductivity in pseudo-binary silicide SrNi xSi 2-x. The compound exhibits a structural phase transition from the cubic SrSi 2-type structure (P4 132) to the hexagonal AlB 2-type structure (P6/mmm) upon substituting Ni for Si at approximately x = 0.1. The hexagonal structure is stabilized in the range of 0.1 < x < 0.7. The superconducting phase appears in the vicinity of the structural phase boundary. Ni acts as a nonmagnetic dopant, as confirmed by the Pauli paramagnetic behavior.

Original languageEnglish
Article number023702
Journaljournal of the physical society of japan
Volume81
Issue number2
DOIs
Publication statusPublished - Feb 1 2012

Keywords

  • AlB -type structure
  • Alkaline-earth disilicide
  • SrSi
  • Superconductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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