Journal article

Weak coupling instabilities of two-dimensional lattice electrons

  • Binz, Benedikt Department of Physics, Fribourg University, Switzerland - Theoretische Physik, ETH Zürich, Switzerland
  • Baeriswyl, Dionys Department of Physics, Fribourg University, Switzerland
  • Douçot, B. Laboratoire de Physique Théorique et Hautes Energies, CNRS Universités Paris VII, France
    10.05.2004
Published in:
  • Physica C: Superconductivity. - 2004, vol. 408-410, no. 250-251
English 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... Show more…
Faculty
Faculté des sciences
Department
Physique
Language
  • English
Classification
Physics
License
License undefined
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Persistent URL
https://folia.unifr.ch/unifr/documents/299561