NDLI: Static and dynamic properties of Josephson fluxons and their implications on critical currents, especially in cuprate superconductors

Content Provider	IEEE Xplore Digital Library
Author	Halbritter, J.
Copyright Year	2002
Abstract	Below 1 Tesla pinned JF yield j/sub c//spl ap/j/sub cJ//spl les/5/spl middot/10/sup 7/A/cm/sup 2/ with j/sub cJ/ the critical Josephson current. The pinning is due to irregularities in the Josephson junctions (weak links) consisting of insulating seams of finite length and varying width, e.g., grain or twin boundaries. At higher fields Abrikosov fluxons (AF) in single crystalline parts may dominate j/sub c/, where j/sub c/ still has to be carried by strong and weak links in series, i.e., by Josephson fluxons (JF) strongly pinned. In addition, the insulating regions at strong and weak links amount to the largest concentration of insulating material in cuprate superconductors able to pin fluxons. Dynamic properties, like, the strong field and frequency dependencies of the surface impedance or the fast transition from normal-to-superconducting state are solely explainable by fast JF with their low loss insulating cores. Because j/sub c/ is given by a critical amount of dissipation, the viscous dynamics of JF- or AF-sliding along weak links play a critical role in superconductors containing strong or weak links.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1169
Ending Page	1172
Page Count	4
File Size	527553
File Format	PDF
ISSN	10518223
Volume Number	7
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Insulation Superconductivity Josephson junctions Frequency Surface impedance Lattices Critical current Josephson effect Crystallization Crystalline materials
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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