INSTANTON AHARONOV-BOHM EFFECT AND MACROSCOPIC QUANTUM COHERENCE IN CHARGE-DENSITY-WAVE SYSTEMS

被引：59

作者：

BOGACHEK, EN

KRIVE, IV

KULIK, IO

ROZHAVSKY, AS

机构：

[1] Institute for Low Temperature Physics and Engineering, Academy of Sciences of the Ukranian S.S.R., 310 164 Kharkov

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.42.7614

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is predicted that in a charge-density-wave (CDW) ring-shaped conductor, placed in an external vector-potential field, there should appear a new Aharonov-Bohm contribution to the magnetic susceptibility and the electrical conductivity oscillating as a function of the flux with the period |0=hc/2e. This contribution arises from instanton transitions between degenerate vacua of the CDW condensate and is the solid-state realization of vacuum in quantum field theory. The period transforms into |0/N in N strongly correlated parallel CDW chains. © 1990 The American Physical Society.

引用

页码：7614 / 7617

页数：4

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