Self-organized critical behavior in pinned flux lattices

Journal Article · Mon Aug 12 04:00:00 EDT 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.919· OSTI ID:5363550

Pla, O; Nori, F ^[1]

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1. Department of Physics, University of Michigan, Ann Arbor, Michigan (USA)

We study the response of pinned fluxed lattices, under small perturbations in the driving force, below and close to the pinning-depinning transition. For driving Lorentz forces below {ital F}{sub {ital c}} (the depinning force at which the whole flux lattice slides), the system has instabilities against small force increases, with a power-law distribution characteristic of self-organized criticality. Specifically, {ital D}({ital d}){similar to}{ital d}{sup {minus}1,3}, where {ital d} is the displacement of a flux line after a very small force increase. We also study the initial stages of the motion of the lattice once the driving force overcomes the pinning forces.

• OSTI ID: 5363550
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:7; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

656000 -- Condensed Matter Physics
656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSOLUTE ZERO TEMPERATURE
DATA
DYNAMICS
FLUCTUATIONS
INFORMATION
LORENTZ FORCE
MAGNETIC FLUX
MATHEMATICAL MODELS
MECHANICS
NUMERICAL DATA
ONE-DIMENSIONAL CALCULATIONS
POTENTIALS
RANDOMNESS
SUPERCONDUCTORS
THEORETICAL DATA
TYPE-II SUPERCONDUCTORS
VARIATIONS