Stoichiometry, spin fluctuations, and superconductivity in LaNiPO

T. M. McQueen, T. Klimczuk, A. J. Williams, Q. Huang, R. J. Cava

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Superconductivity in LaNiPO is disrupted by small (∼5%) amounts of nonstoichiometry on the lanthanum site, even though the electronic contribution to the heat capacity increases with increasing nonstoichiometry. All samples also exhibit specific-heat anomalies consistent with the presence of ferromagnetic spin fluctuations (Tsf ≈14 K). Comparison of layered nickel phosphide and nickel borocarbide superconductors reveals different structure-property correlations in the two families.

Original languageEnglish (US)
Article number172502
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number17
DOIs
StatePublished - May 1 2009

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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