The Superconductivity of Hubbard-Hirsch Model

Liu Jinming ￣; Gong Di; Kuang Zhiqiang

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The Superconductivity of Hubbard-Hirsch Model

更新时间：2023-12-11

- The Superconductivity of Hubbard-Hirsch Model
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 34, Issue 4, Pages: 26-30(1995)
- 作者机构：
  
  1. 中山大学物理学系
  2. 中山大学无线电电子学系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1995，
  
  Published Online：25 July 1995，
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Liu Jinming ￣, Gong Di, Kuang Zhiqiang. The Superconductivity of Hubbard-Hirsch Model. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 34(4):26-30(1995)
DOI：

Liu Jinming ￣, Gong Di, Kuang Zhiqiang. The Superconductivity of Hubbard-Hirsch Model. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 34(4):26-30(1995) DOI：

摘要

应用么正变换微扰论和平均场近似研究了二维Ｈｕｂｂａｒｄ－Ｈｉｒｓｃｈ模型的超导性。在大Ｕ和中等掺杂情况下，只要跳跃常数足够大，模型仍然具有超导性，此时交换作用积分使它的超导相区域比相应的Ｈｕｂｂａｒｄ模型的区域小很多。

Abstract

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.

关键词

超导性Hubbard－Hirsch模型

Keywords

superconductivityHubbard-Hirsch model*

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