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APS » Journals » Phys. Rev. B » Volume 61 » Issue 21
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Phys. Rev. B 61, 14791–14794 (2000)

Depinning of interacting particles in random media

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Stefano Zapperi
PMMH-ESPCI, 10 rue Vauquelin, 75231 Paris Cedex 05, France
INFM sezione di Roma 1, Dipartimento di Fisica, Università “La Sapienza,” P.le A. Moro 2, 00185 Roma, Italy

José S. Andrade, Jr.
PMMH-ESPCI, 10 rue Vauquelin, 75231 Paris Cedex 05, France
Departamento de Física, Universidade Federal do Ceará, 60451-970 Fortaleza, Ceará, Brazil

Josué Mendes Filho
Departamento de Física, Universidade Federal do Ceará, 60451-970 Fortaleza, Ceará, Brazil

Received 24 November 1999; published in the issue dated 1 June 2000

We study the overdamped motion of interacting particles in a random medium using the model introduced by Pla and Nori [Phys. Rev. Lett. 67, 919 (1991)]. We investigate the associated depinning transition by numerical integration of the equation of motion and show evidence that the model is in the same universality class of a driven elastic chain on a rough substrate. We discuss the implications of these results for flux line motion in type-II superconductors.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.61.14791
DOI:
10.1103/PhysRevB.61.14791
PACS:
74.60.Ge, 64.60.Ht
 
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