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Magnetic moments of transition impurities in antiperovskites

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
122
Issue
5
Identifiers
DOI: 10.1016/s0038-1098(02)00110-2
Keywords
  • A. Intermetallic Compound
  • A. Antiperovskite
  • D. Magnetic Moment
Disciplines
  • Physics

Abstract

Abstract Starting from a first principles electronic structure calculation for superconducting antiperovskite MgCNi 3 and using a simple Hartree–Fock approximation, we calculate the magnetic moment of transition impurities T in the dilute limit. The calculation shows that Co impurities are non-magnetic and for the remaining ones at least a small moment exists. Experimental studies of the change with concentration of the superconducting temperature T c may indicate, for non-magnetic impurities, a d-wave behavior of these superconductors.

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