Synchronization and Spin-Flop Transitions for a Mean-Field XY Model in Random Field

Collet, F.; Ruszel, W.M.

doi:10.1007/s10955-016-1557-1

Synchronization and Spin-Flop Transitions for a Mean-Field XY Model in Random Field

Title

Synchronization and Spin-Flop Transitions for a Mean-Field XY Model in Random Field

Author

Collet, F. (TU Delft Applied Probability; University of Bologna)
Ruszel, W.M. (TU Delft Applied Probability)

Date

2016-06-13

Abstract

We characterize the phase space for the infinite volume limit of a ferromagnetic mean-field XY model in a random field pointing in one direction with two symmetric values. We determine the stationary solutions and detect possible phase transitions in the interaction strength for fixed random field intensity. We show that at low temperature magnetic ordering appears perpendicularly to the field. The latter situation corresponds to a spin-flop transition.

Subject

Disordered models
Spin-flop transitions
XY models
Interacting particle systems
Mean-field interaction
Phase transition
Reversible Markov processes

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http://resolver.tudelft.nl/uuid:53c1b3eb-f964-4971-90a0-77b26ca940fc

DOI

https://doi.org/10.1007/s10955-016-1557-1

ISSN

0022-4715

Source

Journal of Statistical Physics, 164 (3), 645-666

Part of collection

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