Unified theory of effects of vortex pinning and flux creep upon the rf surface impedance of type-II superconductors

Journal Article · Mon Jul 15 00:00:00 EDT 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.386· OSTI ID:5589096

Coffey, M W; Clem, J R ^[1]

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1. Ames Laboratory U.S. DOE and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (USA)

We present a new theoretical approach that permits the rf surface impedance {ital Z}{sub {ital s}} of type-II superconductors to be calculated over a wide range of angular frequencies {omega}, magnetic inductions {ital B}, and temperatures {ital T}. Our approach, based on a self-consistent treatment of vortex dynamics, includes the influence of both vortex pinning and flux creep upon {ital Z}{sub {ital s}} in a unified manner, by making use of continued-fraction-expansion results for the dynamic mobility of a particle undergoing Brownian motion in a periodic potential.

• DOE Contract Number: FG02-90ER45427
• OSTI ID: 5589096
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:3; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BROWNIAN MOVEMENT
ELECTRIC IMPEDANCE
ELECTROMAGNETIC RADIATION
IMPEDANCE
MAGNETIC FLUX
MICROWAVE RADIATION
PENETRATION DEPTH
RADIATIONS
SUPERCONDUCTORS
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TYPE-II SUPERCONDUCTORS