Large Exchange Enhancement of Electron-Phonon Coupling as a Possible Mechanism of High T_c Superconductivity

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概要

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• We discuss on the roles of the exchange interaction between electrons and the nature of the bare ion-ion interaction, besides the Fermi surface nesting, in making the electron-phonon coupling λ_<ph> large. We discuss under what condition, λ_<ph> can be strongly exchange enhanced and how such condition is fulfilled in the high T_c oxide superconductors. Also we show how the spin fluctuation coupling destructive to superconductivity might be neglected despite such exhange effect in λ_<ph>.

• 社団法人応用物理学会の論文
• 1987-05-20

著者

• Kim D

  Semiconductor Materials Laboratory Korea Institute Of Science And Technology

• Kim Duk

  Semiconductor Materials Research Center Korea Institute Of Science And Technology

• Kim Duk

  Physics Department Aoyama Gakuin University

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