Pressure studies of (La, Sm)FeAsO1-xFx and LaFePO

H. Takahashi, H. Okada, K. Igawa, Y. Kamihara, M. Hirano, H. Hosono

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Pressure dependence on superconducting transition temperature (Tc) was examined for iron-based superconductor LaFeAsO1-xFx, SmFeAsO1-xFx and LaFePO. The Tc's increase largely for LaFePO and LaFeAsO1-xFx with a small increase of pressure. The electrical resistivity measurements reveal the pressure-induced superconductivity in undoped LaFeAsO and SmFeAsO. X-ray diffraction measurements were also performed under high pressure up to 10 GPa for LaFePO and LaFeAsO1-xFx system, where the anisotropic decrease of the lattice constants was observed with applying pressure.

Original languageEnglish
Pages (from-to)413-417
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume469
Issue number9-12
DOIs
Publication statusPublished - 2009 May 22
Externally publishedYes

Keywords

  • High pressure
  • Iron-based superconductor
  • LaFeAsOF
  • LaFePO
  • Oxypnictide
  • SmFeAsOF
  • Superconductivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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