Nonlinear microwave absorption in weak-link Josephson junctions

Journal Article · Sun Dec 01 04:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.15494· OSTI ID:397628

Xie, L M; Wosik, J; Wolfe, J C ^[1]

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1. Texas Center for Superconductivity and Electrical and Computer Engineering Department, University of Houston, Houston, Texas 77204 (United States)

A model, based on the resistively shunted junction theory, is developed and used to study microwave absorption in weak-link Josephson junctions in high-{ital T}{sub {ital c}} superconductors. Both linear and nonlinear cases of microwave absorption in Josephson junctions are analyzed. A comparison of the model with microwave absorption loop theory is presented along with a general condition for the applicability of both models. The nonlinear case was solved numerically and the threshold points of sharp microwave absorption are presented. At these points, a 2{pi} phase quantization takes place within each microwave cycle, leading to an onset of a sharp rise of absorption. Existence of the 2{pi} dynamic quantization is the key to the interpretation of nonlinear microwave absorption data. The nonlinear microwave absorption model is extended to the study of nonuniformly coupled junctions, and a general statement for the applicability of such a model is presented. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 397628
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 21 Vol. 54; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CRITICAL CURRENT
CUPRATES
ENERGY LOSSES
HIGH-TC SUPERCONDUCTORS
JOSEPHSON JUNCTIONS
MICROWAVE RADIATION
NONLINEAR PROBLEMS
WEAK LINKS