Random phase approximation for superconducting states in multi-orbital Hubbard models with spin-orbit coupling

Kazutaka Nishiguchi, Tomonori Shirakawa, Hiroshi Watanabe, Seiji Yunoki

研究成果: Article

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To better understand electronic and magnetic properties of superconducting (SC) states in 5d transition metal oxides, we derive an analytical formula of the dynamical correlation function for multi-orbital systems with the spin-orbit coupling (SOC), which is accessible to the experimental responses. Starting with a multi-orbital BCS Hamiltonian including the SC gap function, we introduce the dynamical correlation function in the non-interacting case. Based on the diagrammatic techniques, we derive the dynamical correlation function for the interacting case within the random phase approximation. With the help of a numerical calculation, we also show the temperature dependence of the magnetic susceptibility for two different SC states in the presence of the SOC.

元の言語English
記事番号052013
ジャーナルJournal of Physics: Conference Series
807
発行部数5
DOI
出版物ステータスPublished - 2017 4 6

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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