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Incommensurate and Collinear Phases in a Doped Quantum Anti-ferromagnet | W. Barford
; S. Jadhav
; | Date: |
2 Jul 1994 | Subject: | cond-mat | Affiliation: | University of Sheffield | 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. | Source: | arXiv, cond-mat/9407007 | Services: | Forum | Review | PDF | Favorites |
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