Theory of rf magnetic permeability of isotropic type-II superconductors in a parallel field

Journal Article · Fri May 01 00:00:00 EDT 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.45.9872· OSTI ID:7297552

Coffey, M W; Clem, J R ^[1]

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1. Ames Laboratory and Department of Physics, Iowa State University, Ames, Iowa 50011 (United States)

A theoretical description of the complex rf magnetic permeability {tilde {mu}}={mu}{prime}+{ital i}{mu}{prime}{prime} of isotropic type-II superconductors in a parallel applied static magnetic field is presented. The results are based upon a self-consistent treatment of vortex dynamics which simultaneously includes the effects of pinning, flux flow, and flux creep, together with nonlocal vortex interactions. The results are expected to be valid over a wide range of frequencies, magnetic inductions, and temperatures. We show how a {mu}{prime}{prime}-peak line, closely related to the irreversibility line, arises from the theoretical result for the permeability as a function of temperature, magnetic field, and frequency. This theory opens the possibility of investigating flux creep and depinning at frequencies into the GHz range.

• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 7297552
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 45:17; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTROMAGNETIC RADIATION
FREQUENCY DEPENDENCE
FREQUENCY RANGE
GHZ RANGE
MAGNETIC FLUX
MAGNETIC PROPERTIES
MICROWAVE RADIATION
PHYSICAL PROPERTIES
RADIATIONS
SUPERCONDUCTORS
TEMPERATURE EFFECTS
TYPE-II SUPERCONDUCTORS