Tailoring symmetry groups using external alternate fields

Details Tailoring symmetry groups using external alternate fields Tailoring symmetry groups using external alternate fields

2002-09-10

arxiv.org/abs/cond-mat/0209231v3

Europhys. Lett., 63 (5), 674-680 (2003)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 2 figures finite dimension and selection mechanism clarified

Scientific paper

10.1209/epl/i2003-00583-2

Macroscopic systems with continuous symmetries subjected to oscillatory fields have phases and transitions that are qualitatively different from their equilibrium ones. Depending on the amplitude and frequency of the fields applied, Heisenberg ferromagnets can become XY or Ising-like -or, conversely, anisotropies can be compensated -thus changing the nature of the ordered phase and the topology of defects. The phenomena can be viewed as a dynamic form of "order by disorder".

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