Long-range correlated random magnetic fields in the nonlinearσmodel
- 1 January 1984
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 29 (1) , 201-206
- https://doi.org/10.1103/physrevb.29.201
Abstract
The effect of the long-range correlated random magnetic fields which behave like on the critical phenomena is discussed with the use of the nonlinear model. The crossover between the two critical behaviors dominated by the long-range and short-range disorder fixed points is shown to occur at ( is the spin dimensionality). The critical exponents calculated at the long-range disorder fixed point around the lower critical dimensionality are not the same as those in expansions in the pure system.
Keywords
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