Physical properties of ZnCNi3: Comparison with superconducting MgCNi3

Min Seok Park; Jin Soo Giim; Soo Hyeon Park; Y. W. Lee; S. I. Lee; E. J. Choi

doi:10.1088/0953-2048/17/2/007

Physical properties of ZnCNi₃: Comparison with superconducting MgCNi₃

Min Seok Park, Jin Soo Giim, Soo Hyeon Park, Y. W. Lee, S. I. Lee, E. J. Choi

Department of Physics

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60 Scopus citations

Abstract

We have synthesized ZnCNi₃ in which Zn replaces Mg of the superconducting intermetallic perovskite MgCNi₃ (T_c ∼ 8 K). Dc-resistivity and magnetic measurements show that ZnCNi₃ is a paramagnetic metal without onset of superconductivity down to 2 K. Furthermore, even though the two compounds have the same lattice structure and carrier density, their low temperature specific heats are substantially different. We consider possible origins of these observations and show that the strikingly different T_c can be understood within the BCS theory.

Original language	English
Pages (from-to)	274-277
Number of pages	4
Journal	Superconductor Science and Technology
Volume	17
Issue number	2
DOIs	https://doi.org/10.1088/0953-2048/17/2/007
State	Published - Feb 2004

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abstract = "We have synthesized ZnCNi3 in which Zn replaces Mg of the superconducting intermetallic perovskite MgCNi3 (Tc ∼ 8 K). Dc-resistivity and magnetic measurements show that ZnCNi3 is a paramagnetic metal without onset of superconductivity down to 2 K. Furthermore, even though the two compounds have the same lattice structure and carrier density, their low temperature specific heats are substantially different. We consider possible origins of these observations and show that the strikingly different Tc can be understood within the BCS theory.",

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T2 - Comparison with superconducting MgCNi3

AU - Park, Min Seok

AU - Giim, Jin Soo

AU - Park, Soo Hyeon

AU - Lee, Y. W.

AU - Lee, S. I.

AU - Choi, E. J.

PY - 2004/2

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N2 - We have synthesized ZnCNi3 in which Zn replaces Mg of the superconducting intermetallic perovskite MgCNi3 (Tc ∼ 8 K). Dc-resistivity and magnetic measurements show that ZnCNi3 is a paramagnetic metal without onset of superconductivity down to 2 K. Furthermore, even though the two compounds have the same lattice structure and carrier density, their low temperature specific heats are substantially different. We consider possible origins of these observations and show that the strikingly different Tc can be understood within the BCS theory.

AB - We have synthesized ZnCNi3 in which Zn replaces Mg of the superconducting intermetallic perovskite MgCNi3 (Tc ∼ 8 K). Dc-resistivity and magnetic measurements show that ZnCNi3 is a paramagnetic metal without onset of superconductivity down to 2 K. Furthermore, even though the two compounds have the same lattice structure and carrier density, their low temperature specific heats are substantially different. We consider possible origins of these observations and show that the strikingly different Tc can be understood within the BCS theory.

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JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 2

ER -

Physical properties of ZnCNi₃: Comparison with superconducting MgCNi₃

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