Driven Heisenberg Magnets: Nonequilibrium Criticality, Spatiotemporal Chaos and Control

Details Driven Heisenberg Magnets: Nonequilibrium Criticality, Spatiotemporal Chaos and Control Driven Heisenberg Magnets: Nonequilibrium Criticality, Spatiotemporal Chaos and Control

2001-04-29

arxiv.org/abs/cond-mat/0104566v2

Euro. Phys. Lett. 60 (2002) 418

Physics

Condensed Matter

Statistical Mechanics

7 pages, 2 figures. Published in Euro. Phys. Lett

Scientific paper

10.1209/epl/i2002-00280-2

We drive a $d$-dimensional Heisenberg magnet using an anisotropic current. The continuum Langevin equation is analysed using a dynamical renormalization group and numerical simulations. We discover a rich steady-state phase diagram, including a critical point in a new nonequilibrium universality class, and a spatiotemporally chaotic phase. The latter may be `controlled' in a robust manner to target spatially periodic steady states with helical order.

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