Quantum melting of the long - range antiferromagnetic order and spin - wave condensation in t − J − V model


We consider two-dimensional t − J − V model. The wave function of the ground state is constructed. We demonstrate that the doping by holes results in condensation of the spin-waves, destruction of the long-range antiferromagnetic order and formation of the gap in the spin-wave spectrum. PACS numbers: 71.27.+a, 74.20.Hi, 75.50.Ee It is well known that the… (More)


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