| Автор | G J Chen |
| Автор | R Joynt |
| Автор | F C Zhang |
| Дата выпуска | 1991-07-08 |
| dc.description | The authors have numerically evaluated the energy of the staggered flux phase state (SFP), the d-wave resonating valence bond state, and the mixed SFP and d-wave state (SFP+d) of the extended t-J model at various hole densities ( delta ). The flux per plaquette and the size of the d-wave gap are taken as variational parameters. The calculation includes the kinetic energy, spin energy, the effective hole-hole interaction and the three-site pair-hopping term. They found that the SFP is stable against the projected Fermi liquid up to delta approximately=20%. For moderately large J, J/t>or=0.4, the SFP+d state may be favoured against the pure d-wave state but only at very low hole density ( delta approximately 20%). These calculations show that the pure SFP state is never the ground state at hole densities of experimental interest. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Staggered flux phase and d-wave phase of the t-J model |
| Тип | paper |
| DOI | 10.1088/0953-8984/3/27/016 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 3 |
| Первая страница | 5213 |
| Последняя страница | 5218 |
| Аффилиация | G J Chen; Dept. of Phys., Wisconsin-Madison Univ., WI, USA |
| Аффилиация | R Joynt; Dept. of Phys., Wisconsin-Madison Univ., WI, USA |
| Аффилиация | F C Zhang; Dept. of Phys., Wisconsin-Madison Univ., WI, USA |
| Выпуск | 27 |
