Quantum Phase Transition on a Spin-One Spatially Anisotropic Frustrated Zigzag Square Lattice |
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| Authors: | A S T Pires |
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| Institution: | 1.Departamento de Fisica,Universidade Federal de Minas Gerais,Belo Horizonte,Brazil |
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| Abstract: | We study quantum phase transitions in the easy-plane spin-one Heisenberg model on a zigzag square lattice with next-nearest-neighbor interactions at zero temperature using the SU(3) Schwinger boson formalism in a mean field approximation. We present the phase diagram and the dispersion relation for several values of the parameters. A magnetically disordered region in the phase diagram is found, even when the anisotropy parameter vanishes. |
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