Disorder Induced Transitions in Layered Coulomb Gases and Superconductors

Details Disorder Induced Transitions in Layered Coulomb Gases and Superconductors Disorder Induced Transitions in Layered Coulomb Gases and Superconductors

2000-02-02

arxiv.org/abs/cond-mat/0002037v1

Phys. Rev. Lett. {\bf 84} 5395 (2000)

Physics

Condensed Matter

4 pages, 2 figures, RevTex

Scientific paper

10.1103/PhysRevLett.84.5395

A 3D layered system of charges with logarithmic interaction parallel to the layers and random dipoles is studied via a novel variational method and an energy rationale which reproduce the known phase diagram for a single layer. Increasing interlayer coupling leads to successive transitions in which charge rods correlated in N>1 neighboring layers are nucleated by weaker disorder. For layered superconductors in the limit of only magnetic interlayer coupling, the method predicts and locates a disorder-induced defect-unbinding transition in the flux lattice. While N=1 charges dominate there, N>1 disorder induced defect rods are predicted for multi-layer superconductors.

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