Validity of t-J approximation for extended Hubbard model with strong repulsion uri icon

abstract

  • © V.O. Cheranovskii, D.J. Klein, E.V. Ezerskaya, and V.V. Tokarev, 2017. It is shown that for finite cyclic systems described by two band Hubbard Hamiltonian with strong electron re-pulsion the reduction to effective t-J model may give incorrect description of the ground state symmetry due to neglect of the correlated hopping terms.

published proceedings

  • Fizika Nizkikh Temperatur

author list (cited authors)

  • Cheranovskii, V. O., Klein, D. J., Ezerskaya, E. V., & Tokarev, V. V.

complete list of authors

  • Cheranovskii, VO||Klein, DJ||Ezerskaya, EV||Tokarev, VV

publication date

  • November 2017