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Breaking chirality in nonequilibrium systems

1990; American Physical Society; Volume: 65; Issue: 11 Linguagem: Inglês

10.1103/physrevlett.65.1352

1092-0145

P. Coullet, J. Lega, B. Houchmanzadeh, J. Lajzérowicz,

Theoretical and Computational Physics

At equilibrium, Bloch walls are chiral interfaces between domains with different magnetization. Far from equilibrium, a set of forced oscillators can exhibit walls between states with different phases. In this Letter, we show that when these walls become chiral, they move with a velocity simply related to their chirality. This surprising behavior is a straightforward consequence of nonvariational effects, which are typical of nonequilibrium systems.