Cooper pairing between conduction and localized electrons in heavy-fermion systems

Keisuke Masuda, Daisuke Yamamoto

Research output: Contribution to journalArticle

Abstract

We study the Cooper pairing between a conduction electron (c electron) and a localized f electron in heavy-fermion systems. Applying the Schrieffer-Wolff transformation to the periodic Anderson model, we obtain an effective Hamiltonian for describing the c-f pairing superconductivity. The effective Hamiltonian includes direct and spin-exchange interactions between c and f electrons, which can be the driving force for the formation of Cooper pairs. Within the mean-field approximation, we show that the c-f pairing state with anisotropic s-wave symmetry is stabilized in a wide range of parameters.

Original languageEnglish
Pages (from-to)459-462
Number of pages4
JournalJournal of the Korean Physical Society
Volume63
Issue number3
DOIs
Publication statusPublished - 2013 Aug

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heavy fermion systems
conduction electrons
spin exchange
electrons
superconductivity
symmetry
approximation
interactions

Keywords

  • Heavy-fermion superconductors
  • Periodic Anderson model
  • s-wave pairing symmetry

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Cooper pairing between conduction and localized electrons in heavy-fermion systems. / Masuda, Keisuke; Yamamoto, Daisuke.

In: Journal of the Korean Physical Society, Vol. 63, No. 3, 08.2013, p. 459-462.

Research output: Contribution to journalArticle

Masuda, Keisuke ; Yamamoto, Daisuke. / Cooper pairing between conduction and localized electrons in heavy-fermion systems. In: Journal of the Korean Physical Society. 2013 ; Vol. 63, No. 3. pp. 459-462.
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