Néel and singlet RVB orders in the t-J model
arXiv:cond-mat/9602027 · doi:10.1016/0921-4534(95)00763-6
Abstract
The Néel and the singlet RVB orders of the {\it t-J} model in a 2D square lattice are studied in the slave-boson mean-field approximation. It is shown that the Néel order parameter takes the maximum value at the finite temperature and disappear at the lower temperature for a certain range of doping. It is also shown that the Néel and the singlet RVB orders coexist at low temperature. This suggests the possibility of the coexistence of the Néel and the superconducting orders.
RevTeX, 8 pages, 1 postscript figure. To appear in Physica C, Volume 257, issue 384