Abstract
The supersymmetric formulation of the t-J model is studied in this paper at the mean-field level where the δ-T phase diagram is determined. We found that the slave-fermion-like spiral phase is stable at low doping concentration, and the slave-boson-like d-wave fermionic spin pairing state becomes energetically favourable when δ ≥ 0.23. An improvement in free energy using Gutzwiller's method lowers the transition doping concentration to δ ≃ 0.06. We also point out the existence of new branches of excitations in the supersymmetric theory.
| Original language | English |
|---|---|
| Pages (from-to) | 87-93 |
| Number of pages | 7 |
| Journal | Europhysics Letters |
| Volume | 52 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2000 Oct 1 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
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Cite this
Cheng, C. H., & Ng, T. K. (2000). Supersymmetric mean-field theory of the t-J model. Europhysics Letters, 52(1), 87-93. https://doi.org/10.1209/epl/i2000-00408-4