Nonequilibrium quantum phase transition in itinerant electron systems

被引：30
|
作者：
Feldman, DE [1 ]
机构：
[1] Brown Univ, Dept Phys, Providence, RI 02912 USA
来源：
PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 17期
关键词：
D O I：
10.1103/PhysRevLett.95.177201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 nonzero 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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页数：4
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