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

页码：4009 / 4016

页数：8

共 48 条

[31] PHASE-DIAGRAM OF A CHAIN OF DISSIPATIVE JOSEPHSON-JUNCTIONS [J].