Pressure effects on superconducting and structural properties for nickel-based superconductors LaNiXO (X = P and As)

Hironari Okada, Yuki Takahashi, Kazumi Igawa, Kazunobu Arii, Hiroki Takahashi, Takumi Watanabe, Hiroshi Yanagi, Yoichi Kamihara, Toshio Kamiya, Masahiro Hirano, Hideo Hosono, Satoshi Nakano, Takumi Kikegawa

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We have performed electrical resistivity and powder X-ray diffraction measurements under high pressures for nickel-based superconducors LaNiXO (X = P and As). Superconducting transition temperatures Tc of X = P and As increase to 3.78 K at 1.67 GPa and 3.14 K at 0.75 GPa, respectively. A compressibility of the lattice parameter c of LaNiPO is 1.5 times larger than that of the lattice parameter a, resulting in a linear decrease of an axial ratio c/a.

Original languageEnglish
Pages (from-to)119-120
Number of pages2
JournalJournal of the Physical Society of Japan
Volume77
Issue numberSUPPL. C
DOIs
Publication statusPublished - 2008 Jan 1
Externally publishedYes

Keywords

  • Bulk modulus
  • Electrical resistivity
  • High pressure
  • Oxypnictide
  • Superconductivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Okada, H., Takahashi, Y., Igawa, K., Arii, K., Takahashi, H., Watanabe, T., Yanagi, H., Kamihara, Y., Kamiya, T., Hirano, M., Hosono, H., Nakano, S., & Kikegawa, T. (2008). Pressure effects on superconducting and structural properties for nickel-based superconductors LaNiXO (X = P and As). Journal of the Physical Society of Japan, 77(SUPPL. C), 119-120. https://doi.org/10.1143/JPSJS.77SC.119