We present a description of the ground state and low-lying excited states of two holes in the 4 x 4 cluster t-J model in terms of a simple model for the motion of a single bipolaron. The existence of short-range antiferromagnetic correlations has been assumed. According to the suggested scenario, th
Bound state of two holes in the t-J model
โ Scribed by Jun-ichiro Inoue; Sadamichi Maekawa
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 310 KB
- Volume
- 185-189
- Category
- Article
- ISSN
- 0921-4534
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๐ SIMILAR VOLUMES
Several series ,~f shallow long-range (l 7~, lattice spacing) two-hole bound states on the Need background axe found in the two-dimensional t-J model. Their binding energ'~ depend exponentially on the inverse value of the hole-spin-wave coupling constant. The possible role of these states in the for
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