Stoichiometry, Spin Fluctuations, and Superconductivity in LaNiPO
classification
❄️ cond-mat.supr-con
cond-mat.str-el
keywords
fluctuationsheatlaniponickelnon-stoichiometryspinsuperconductivityamounts
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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.
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