One-particle excitations in strong-coupling superconductors: A new realization of the t-J model

A. G. Rojo, J. O. Sofo, C. A. Balseiro

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13 Scopus citations

Abstract

We study the one-particle excitations in strong-coupling superconductors described by a negative-U Hubbard Hamiltonian. We show that the problem of single-particle excitation can be mapped onto that of a hole in a polarized antiferromagnetic Heisenberg model. We discussusing a self-consistent diagrammatic approachthe distortion of the superfluid order parameter in the vicinity of the quasiparticle and the connection with the pairing-bag problem.

Original languageEnglish (US)
Pages (from-to)10241-10244
Number of pages4
JournalPhysical Review B
Volume42
Issue number16
DOIs
StatePublished - Jan 1 1990

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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