Tailoring symmetry groups using external alternate fields

Abstract

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".

4 pages, 2 figures finite dimension and selection mechanism clarified

References in corpus (5)

• Skyrmion strings and the anomalous Hall effect in CrO${}_2$
• Universal Magnetic Fluctuations with a Field Induced Length Scale
• Orientations of the lamellar phase of block copolymer melts under oscillatory shear flow
• Driven Heisenberg Magnets: Nonequilibrium Criticality, Spatiotemporal Chaos and Control
• AC-driven quantum spins: resonant enhancement of transverse DC magnetization

Cited by in corpus (2)

• Nonequilibrium Phase Transitions in Model Ferromagnets: A Review
• Hysteresis in magnets