Electronic structure, magnetism, and superconductivity of MgCxNi3

S. B. Dugdale; T. Jarlborg

doi:10.1103/PhysRevB.64.100508

← Back to search

Electronic structure, magnetism, and superconductivity of MgCxNi3

S. B. Dugdale, T. Jarlborg

DOI 10.1103/PhysRevB.64.100508 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

The electronic structure of the newly discovered superconducting perovskite MgCNi3 is calculated using the LMTO method. The states near the Fermi energy are found to be dominated by Ni−d. The Stoner factor is low while the electron-phonon coupling constant is estimated to be about 0.5, which suggests that the material is a conventional type of superconductor where Tc is not affected by magnetic interactions. However, the proximity of the Fermi energy to a large peak in the density of states in conjunction with the reported nonstoichiometry of the compound has consequences for the stability of the results.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
MgCNi3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	8	Pressure not reported	unknown
MgCNi3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	9	Pressure not reported	unknown