Hole drops versus the spiral state in the t-J model
โ Scribed by A.L. Alistratov; Yu.A. Dimashko; V.S. Podolsky
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 378 KB
- Volume
- 167
- Category
- Article
- ISSN
- 0375-9601
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๐ SIMILAR VOLUMES
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
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
We calculate the one-hole spectral function for the polarized t-J model using exact diagonalization for a finite size cluster. A well-defined quasiparticle peak appears at the bottom of the spectrum for intermediate values of J. The momentum of the quasiparticle corresponding to the bottom of the ba