Liu Jinming  ̄, Gong Di, Kuang Zhiqiang. The Superconductivity of Hubbard-Hirsch Model[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 1995,34(4):26-30.
Liu Jinming  ̄, Gong Di, Kuang Zhiqiang. The Superconductivity of Hubbard-Hirsch Model[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 1995,34(4):26-30.DOI:
By using a perturbative canonical transformation and mean field theory
thesuperconducting transition temperature as a function of the dopping parameter for theHubbard-Hirsch model is calculated.It is shown that superconductivity is possible aslong as the hopping integral is large enough and that the superconductive region be-comes smaller due to existing of exchange integral.