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Incommensurate and Collinear Phases in a Doped Quantum Anti-ferromagnet

W. Barford·S. Jadhav
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Abstract

The Schwinger Boson mean field theories of the `t-J' model are extended by the consideration of anisotropic order parameters. This has two effects. First, a collinear phase, in which the spins are anti-ferromagnetically aligned in one direction and ferromagnetically aligned in the other, is found to be stable over a significant range of the phase diagram. Second, the (1,1) and (1,0) spiral phases become very close in energy. The inclusion of weak intra-sublattice coupling may therefore stabilise the (1,0) spiral with respect to the (1,1) spiral, thus harmonising theory and experiment.

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W. Barford, S. Jadhav. 1994-07-02. Incommensurate and Collinear Phases in a Doped Quantum Anti-ferromagnet. https://doi.org/10.1088/0953-8984%2F5%2F45%2F012

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