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

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

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.

Original languageEnglish
Pages (from-to)274-277
Number of pages4
JournalSuperconductor Science and Technology
Volume17
Issue number2
DOIs
StatePublished - Feb 2004

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