Model fors unconventional superconductivity of Sr2RuO4

Effect of impurity scattering on time-reversal breaking triplet pairing with a tiny gap

K. Miyake, Osamu Narikiyo

Research output: Contribution to journalArticle

156 Citations (Scopus)

Abstract

A model for unconventional superconductivity of Sr2RuO4is presented to resolve its puzzle. It is shown that the short-range ferromagnetic spin fluctuations give rise to the triplet pairing with p-like symmetry which is breaking the time-reversal symmetry and has a tiny gap due to the salient shape of the Fermi surface characteristic to Sr2RuO4. The effect of nonmagnetic-impurity scattering in the unitarity limit is shown to fill up easily the tiny gap giving rise to an appreciable residual density of states, which explains consistently the puzzling properties observed so far.

Original languageEnglish
Pages (from-to)1423-1426
Number of pages4
JournalPhysical Review Letters
Volume83
Issue number7
DOIs
Publication statusPublished - Jan 1 1999

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superconductivity
impurities
symmetry
scattering
Fermi surfaces

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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AB - A model for unconventional superconductivity of Sr2RuO4is presented to resolve its puzzle. It is shown that the short-range ferromagnetic spin fluctuations give rise to the triplet pairing with p-like symmetry which is breaking the time-reversal symmetry and has a tiny gap due to the salient shape of the Fermi surface characteristic to Sr2RuO4. The effect of nonmagnetic-impurity scattering in the unitarity limit is shown to fill up easily the tiny gap giving rise to an appreciable residual density of states, which explains consistently the puzzling properties observed so far.

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