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 |
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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)