Phys. Rev. Lett. 67, 919–922 (1991)Self-Organized Critical Behavior in Pinned Flux LatticesReceived 28 May 1991; published in the issue dated 12 August 1991 We study the response of pinned flux lattices, under small perturbations in the driving force, below and close to the pinning-depinning transition. For driving Lorentz forces below Fc (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, D(d)∼d-1.3, where 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. © 1991 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.67.919
DOI:
10.1103/PhysRevLett.67.919
PACS:
74.60.Ge, 05.40.+j
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