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    Université de Fribourg

    Weak coupling instabilities of two-dimensional lattice electrons

    Binz, Benedikt ; Baeriswyl, Dionys ; Douçot, B.

    In: Physica C: Superconductivity, 2004, vol. 408-410, p. 250-251

    We present a consistent and systematic study of a two-dimensional extended Hubbard model in the weak coupling limit. Quite generally, the electron gas is unstable towards a superconducting state even in the absence of phonons, since high-energy spin fluctuations create an effective attraction between the quasi-particles. However in the special case of a half-filled nearest-neighbor tight-binding...

    Université de Fribourg

    Weak-coupling instabilities of two-dimensional lattice electrons

    Binz, Benedikt ; Baeriswyl, Dionys (Dir.) ; Douçot, Benoit (Codir.)

    Thèse de doctorat : Université de Fribourg : 2002 ; 1374.

    Interacting e1ectrons in two dimensions are of particular interest in relation to high-temperature superconductivity. In this thesis, I study a two-dimensional extended Hubbard model in the weak coupling limit. Quite generally, the electron gas is unstable towards a superconducting state even in the absence of phonons. However in the special case of a half-filled band, the Fermi surface is nested...

    2 results 1
    See also: similar author names
    1 DOUCOT, Benoit
    1 Doucot, Benoit
    1 Douçot, B.
    1 Douçot, Benoit