Nonequilibrium quantum phase transition in itinerant electron systems

Details Nonequilibrium quantum phase transition in itinerant electron systems Nonequilibrium quantum phase transition in itinerant electron systems

2005-01-07

arxiv.org/abs/cond-mat/0501133v2

Phys. Rev. Lett. 95, 177201 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

Final version as accepted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.95.177201

We study the effect of the voltage bias on the ferromagnetic phase transition in a one-dimensional itinerant electron system. The applied voltage drives the system into a nonequilibrium steady state with a non-zero electric current. The bias changes the universality class of the second order ferromagnetic transition. While the equilibrium transition belongs to the universality class of the uniaxial ferroelectric, we find the mean-field behavior near the nonequilibrium critical point.

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