| Issue |
Europhys. Lett.
Volume 60, Number 3, November I 2002
|
|
|---|---|---|
| Page(s) | 418 - 424 | |
| Section | Condensed matter: structural, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00280-2 | |
| Published online | 01 October 2002 | |
Driven Heisenberg magnets: Nonequilibrium criticality, spatiotemporal chaos and control
1
Raman Research Institute - C.V. Raman Avenue
Sadashivanagar, Bangalore 560080, India
2
Institute of Mathematical Sciences - Taramani, Chennai
600113, India
3
Centre for Condensed-Matter Theory, Department of Physics
Indian Institute of Science - Bangalore 560 080, India
Corresponding authors: jayajit@vt.edu, madan@rri.res.in, sriram@physics.iisc.ernet.in
Received:
12
April
2002
Accepted:
22
August
2002
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.
PACS: 64.60.Cn – Order-disorder transformations; statistical mechanics of model systems / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion
© EDP Sciences, 2002
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