Scaling approach to pinning: Charge density waves and giant flux creep in superconductors

Journal Article · Mon May 14 04:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.2454· OSTI ID:7036955

Nattermann, T ^[1]

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1. Institut fuer Festkoerperforschung, Kernforschungsanlage Juelich G.m.b.H., D-5170 Juelich, Federal Republic of Germany (DE)

A general scaling approach to pinning and response in weakly disordered systems is developed that considers pinning at arbitrary high energy barriers. These are a consequence of a disordered {ital T}=0 renormalization-group fixed point which characterizes the condensed phase. Application to flux creep in superconductors yields a creep velocity {nu}({ital j}){proportional to}exp{minus}{ital Cj}{sup {minus}{mu}} where {mu} is related to the roughness exponents {zeta} of the flux-line lattice. We argue that {zeta}=0(log) and {mu}=({ital d}{minus}2)/2 as for charge-density waves.

• OSTI ID: 7036955
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:20; 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
ABSOLUTE ZERO TEMPERATURE
CRITICAL TEMPERATURE
CRYSTALS
MAGNETIC FLUX
PHYSICAL PROPERTIES
PLASMA WAVES
RANDOMNESS
ROUGHNESS
SCALING LAWS
SUPERCONDUCTORS
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE