Vortices and Flux DynamicsNo Access

QUANTUM PHASE TRANSITIONS IN DISSIPATIVE JOSEPHSON JUNCTION ARRAYS

K. MOON

Department of Physics and IPAP, Yonsei University, Seoul 120-749, Korea

https://doi.org/10.1142/S0217979205028839Cited by:1 (Source: Crossref)

Abstract

Quantum phase slips can induce a phase transition in a single Josephson junction by varying coupling strength R_S to the dissipative environment. We study the finite Josephson junction array with dissipations. For the infinite arrays with no dissipation, a quantum KT phase transition can occur by varying the ratio of the Josephson coupling strength E_J to the charging energy E_c due to the unbinding of instanton pairs. At finite temperature and array size, there will be a rich interplay between instantons and quantum phase slips.

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