High-pressure studies on superconductivity in LaFeAsO 1-x F x and SmFeAsO 1-x F x

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

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20 Citations (Scopus)


The pressure dependence on the superconducting transition temperature (T c ) was investigated for the iron-based superconductors LaFeAsO 1-x F x and SmFeAsO 1-x F x . The T c 's increase largely for LaFeAsO 1-x F x with a small increase of pressure, while a sharp decrease of T c was observed for SmFeAsO 1-x F x . The electrical resistivity measurements reveal pressure-induced superconductivity for undoped LaFeAsO and SmFeAsO. These pressure effects seem to be related to an anisotropic decrease of the lattice constants under high pressure from the x-ray diffraction measurements up to 10 GPa for the LaFeAsO 1-x F x system.

Original languageEnglish
Pages (from-to)595-598
Number of pages4
JournalJournal of Superconductivity and Novel Magnetism
Issue number6
Publication statusPublished - 2009 Aug 1
Externally publishedYes


  • High-pressure
  • LaFeAsO F
  • Pressure-induced superconductivity
  • SmFeAsO F

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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