Orbital fluctuation-induced triplet superconductivity: Mechanism of superconductivity inSr2RuO4

2000/12/01 by Tetsuya Takimoto · 10 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.62.r14641

published as Physical Review B 62, R14641 (2000) · 5 pages, 4 figures

openalex publication_date 2000/12/01 · arxiv created 2002/04/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The mechanism of superconductivity in Sr₂RuO₄ is studied using a degenerate Hubbard model within the weak coupling theory. When the system approaches the orbital instability which is realized due to increasing the on-site Coulomb interaction between the electrons in the different orbitals, it is shown that the triplet superconductivity appears. This superconducting mechanism is only available in orbitally degenerate systems with multiple Fermi surfaces.

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