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Effect of SC-coupling and AFM-coupling on SC-gap in borocarbide superconductors

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Volume
391
Issue
4
Identifiers
DOI: 10.1016/s0921-4534(03)00962-6
Keywords
  • Quaternary Borocarbides
  • Superconductivity Of Borocarbides
  • Anti-Ferromagnetic Order
Disciplines
  • Physics

Abstract

Abstract The competition between magnetism and superconductivity is being investigated for the recently discovered RNi 2B 2C superconductors with the magnetic rare-earth elements R. The effect of the superconducting coupling λ 1 and the anti-ferromagnetic coupling λ 2 on the superconducting gap and anti-ferromagnetic gap in rare-earth nickel borocarbides is presented in this paper. We have used the Zubarev’s double time Green’s function technique and equations of motion method to evaluate the superconducting gap and anti-ferromagnetic staggered field. It provides qualitative explanations to the experimental observations.

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