TOPOLOGICAL INVARIANCE OF SUPERCONDUCTING ARRAYS

被引：27

作者：

CHOI, MY ^{[1
]}

机构：

[1] SEOUL NATL UNIV,CTR THEORET PHYS,SEOUL 151742,SOUTH KOREA

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.46.564

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study in an analytical way the response of a Josephson-junction array to an alternating applied current. From the dynamic equation governing the time evolution of the system, an effective Hamiltonian describing the low-temperature stationary state is obtained. The quantized voltage steps are then shown to result from topological invariance of the system. The relevance of boundary conditions and ground-state degeneracies is also discussed.

引用

页码：564 / 566

页数：3

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