Four-Spin Exchange Model andMagnetism
- 14 July 1980
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 45 (2) , 137-140
- https://doi.org/10.1103/physrevlett.45.137
Abstract
A two-parameter model based on three-spin exchange and planar four-spin exchange gives at low field a first-order transition to the ordered phase suggested by Osheroff, Cross, and Fisher and at high field gives a second-order phase agreeing with the experiments of Godfrin et' al. and Adams et al. It also fits well the high-temperature expansion coefficients and the susceptibility of the low-field phase.Keywords
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