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Theory of Superconductors with Strong Coupling in the Bogolyubov Method
Author(s) -
Lozovsky V. Z.,
Nazarenko A. B.,
Khudik B. I.
Publication year - 1988
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221480127
Subject(s) - superconductivity , hamiltonian (control theory) , condensed matter physics , physics , phonon , transformation (genetics) , coupling (piping) , quantum mechanics , mathematical physics , theoretical physics , mathematics , materials science , chemistry , mathematical optimization , biochemistry , metallurgy , gene
Abstract The Bogolyubov U–V transformation method is generalized to the diagonalization of an electron–phonon Hamiltonian in the superconducting medium. The self‐consistent equations are written. The structure of the quasi‐particle spectrum is found. The criterium of superconductivity is discussed.