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Hole correlation and antiferromagnetic order in thet−Jmodel
2006
Physical Review B
We study the t-J model with four holes on a 32-site square lattice using exact diagonalization. This system corresponds to doping level x=1/8. At the "realistic" parameter J/t=0.3, holes in the ground state of this system are unbound. They have short range repulsion due to lowering of kinetic energy. There is no antiferromagnetic spin order and the electron momentum distribution function resembles hole pockets. Furthermore, we show evidence that in case antiferromagnetic order exists, holes
doi:10.1103/physrevb.73.014502
fatcat:gwniryzhdvf3bevbmosupq5nqy