Stoichiometry, Spin Fluctuations, and Superconductivity in LaNiPO

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

doi:10.1103/PhysRevB.79.172502

Stoichiometry, Spin Fluctuations, and Superconductivity in LaNiPO

Superconductivity 2009-08-11 v1 Strongly Correlated Electrons

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

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Abstract

Superconductivity in LaNiPO is disrupted by small (~5%) amounts of non-stoichiometry on the lanthanum site, even though the electronic contribution to the heat capacity increases with increasing non-stoichiometry. 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.

Keywords

unconventional superconductivity superconductivity high-temperature superconductivity

Cite

@article{arxiv.0904.4237,
  title  = {Stoichiometry, Spin Fluctuations, and Superconductivity in LaNiPO},
  author = {T. M. McQueen and T. Klimczuk and A. J. Williams and Q. Huang and R. J. Cava},
  journal= {arXiv preprint arXiv:0904.4237},
  year   = {2009}
}

Comments

Submitted to Phys. Rev. B

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