First investigation of pressure effects on transition from superconductive to metallic phase in FeSe 0.5Te 0.5

Kazumasa Horigane, Nao Takeshita, Chul Ho Lee, Haruhiro Hiraka, Kazuyoshi Yamada

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Abstract

High-pressure resistivity experiments were performed on FeSe 0.5Te 0.5. The onset temperature of T c (T onset c) increases rapidly from 13.5 to 26.2K upon applying pressure up to 2 GPa. Above 2 GPa, T c decreases linearly and the metallic phase was observed at P 14 GPa. The same relationship between normalized T c and pressure in both FeSe 0.5Te 0.5 and FeSe suggests a universal pressure dependence in this system. This report presents the first observation of a phase transition from the superconducting to the metallic phase on the P-T c phase diagram.

Original languageEnglish
Article number063705
Journaljournal of the physical society of japan
Volume78
Issue number6
DOIs
Publication statusPublished - Jun 1 2009
Externally publishedYes

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Keywords

  • Electrical Resistivity
  • Iron-based Superconductor
  • Pressure effect

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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