Incommensurate and Collinear Phases in a Doped Quantum Anti-ferromagnet
Condensed Matter
2009-10-22 v1
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.
Keywords
Cite
@article{arxiv.cond-mat/9407007,
title = {Incommensurate and Collinear Phases in a Doped Quantum Anti-ferromagnet},
author = {W. Barford and S. Jadhav},
journal= {arXiv preprint arXiv:cond-mat/9407007},
year = {2009}
}
Comments
Tex, 12 pages. Published in J. Phys. Condens. Matt., 5 (1993) 8595-8602