Superconductivity in ferromagnetic RuSr2GdCu2O8

J. X. Zhu, C. S. Ting, C. W. Chu

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The phase diagram of temperature versus exchange field is obtained within a BCS model for d-wave superconductivity in CuO2 layers which is coupled to ferromagnetic RuO2 layers in RuSr2GdCu2O8. It is found that the Fulde-Ferrell-Larkin-Ovchinnikov state is very sensitive to the band filling factor. For strong exchange field, we point out that superconductivity could only exist in the interfaces between ferromagnetic domains. The magnetization curve is calculated and its comparison with experiment is discussed. We also propose the measuring of tunneling conductance near a single unitary impurity to detect the strength of the exchange interaction.

Original languageEnglish
Pages (from-to)11369-11372
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume62
Issue number17
DOIs
Publication statusPublished - 2000 Nov 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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