THE MAGNETIC-FIELD CROSSOVER EXPONENT PROBLEM REVISITED

被引:2
作者
CASTELLANI, C [1 ]
KOTLIAR, G [1 ]
机构
[1] RUTGERS STATE UNIV,DEPT PHYS,PISCATAWAY,NJ 08854
来源
PHYSICA A | 1990年 / 167卷 / 01期
关键词
D O I
10.1016/0378-4371(90)90060-6
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The magnetic field crossover problem is reexamined in the context of the nonlinear σ model for non-interacting electrons in a disordered system. By using a Wilson-Polyakov renormalization group, the orbital magnetic field crossover exponent is found to agree to lowest order with the exponent expected from naive scaling arguments. It is also argued that this result is in fact valid to all orders. © 1990.
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页码:294 / 300
页数:7
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