Superconductivity in (LuC)2(Ni2B2) and (LuC)(Ni2B2)

L. Gao, X. D. Qiu, Y. Cao, R. L. Meng, Y. Y. Sun, Y. Y. Xue, C. W. Chu

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Abstract

We have studied (LuC)2(Ni2B2) and (LuC)(Ni2B2) at ambient and high pressures. Superconductivity was discovered in (LuC)2(Ni2B2) at 2.9 K. Pressure was found to suppress both the electrical resistivity and the superconducting transition temperature rapidly for (LuC)2(Ni2B2) but only slightly for (LuC)(Ni2B2), in spite of their similar chemical-bonding behavior. The observations can be understood in terms of the smaller density of states at the Fermi surface and the greater pressure-induced band broadening of (LuC)2(Ni2B2) than (LuC)(Ni2B2).

Original languageEnglish
Pages (from-to)9445-9448
Number of pages4
JournalPhysical Review B
Volume50
Issue number13
DOIs
Publication statusPublished - 1994

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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