Journal article

Superconductivity and antiferromagnetism in the two-dimensional Hubbard model: a variational study

  • Eichenberger, David Department of Physics, University of Fribourg, Switzerland
  • Baeriswyl, Dionys Department of Physics, University of Fribourg, Switzerland
    30.11.2007
Published in:
  • Physical Review B. - 2007, vol. 76, p. 180504(R)
English A variational ground state of the repulsive Hubbard model on a square lattice is investigated numerically for an intermediate coupling strength (U=8t) and for moderate sizes (from 6×6 to 10×10). Our ansatz is superior to other widely used variational wave functions. The results for order parameters and correlation functions provide insight into the antiferromagnetic state at half-filling as... Show more…
Faculty
Faculté des sciences
Department
Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/300573