Electronic properties and Fermi surfaces MgCNi₃ and related intermetallics

2001/07/01 by I. R. Shein, Shein, I. R., N. I. Medvedeva +4
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Microwave Dielectric Ceramics Synthesis #Superconductivity (cond-mat.supr-con) #Superconductivity in MgB2 and Alloys #Thermal Expansion and Ionic Conductivity #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.cond-mat/0107010

6 pages, 5 figures

openalex publication_date 2001/07/01 · arxiv created 2001/07/03 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The band structure of the new perovskite-like superconductor MgCNi₃ was studied by the self-consistent FP-LMTO method. The superconducting properties of MgCNi₃ are associated with an intensive peak in the density of Ni3d states near the Fermi level. The absence of superconductivity for nonstoichiometric compositions MgC_1-xNi₃ is due to the transition of the system to the magnetic state. The possibility of superconductivity was discussed for intermetallics ScBNi₃, InBNi₃, MgCCo₃ and MgCCu₃ which are isostructural with MgCNi₃.

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