PHASE-TRANSITIONS IN DISSIPATIVE JOSEPHSON CHAINS

被引:29
作者
BOBBERT, PA [1 ]
FAZIO, R [1 ]
SCHON, G [1 ]
ZIMANYI, GT [1 ]
机构
[1] UNIV CALIF DAVIS,DEPT PHYS,DAVIS,CA 95616
来源
PHYSICAL REVIEW B | 1990年 / 41卷 / 07期
关键词
D O I
10.1103/PhysRevB.41.4009
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We study the zero-temperature phase transitions of a chain of Josephson junctions, taking into account the quantum fluctuations due to the charging energy and the effects of an Ohmic dissipation. We map the problem onto a generalized Coulomb gas model, which then is transformed into a sine-Gordon field theory. Apart from the expected dipole unbinding transition, which describes a transition between globally superconducting and resistive behavior, we find a quadrupole unbinding transition at a critical strength of the dissipation. This transition separates two superconducting states characterized by different local properties. © 1990 The American Physical Society.
引用
收藏
页码:4009 / 4016
页数:8
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