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

doi:10.1103/PhysRevB.50.9445

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 language	English
Pages (from-to)	9445-9448
Number of pages	4
Journal	Physical Review B
Volume	50
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.50.9445
Publication status	Published - 1994

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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title = "Superconductivity in (LuC)2(Ni2B2) and (LuC)(Ni2B2)",

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).",

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T1 - Superconductivity in (LuC)2(Ni2B2) and (LuC)(Ni2B2)

AU - Gao, L.

AU - Qiu, X. D.

AU - Cao, Y.

AU - Meng, R. L.

AU - Sun, Y. Y.

AU - Xue, Y. Y.

AU - Chu, C. W.

PY - 1994

Y1 - 1994

N2 - 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).

AB - 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).

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

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