Publication
Physical Review Letters
Paper

Orientational order in disordered superconductors

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Abstract

Orientational order in weakly pinned Abrikosov flux lattices is studied, taking into account two heretofore neglected effects: dislocations and orientational couplings to the underlying lattice. Without orientational couplings, arbitrarily weak pinning destroys long-ranged orientational order for all spatial dimensions d<4. Orientational couplings stabilize long-ranged orientational order. For fields along an axis of fourfold symmetry, sixfold (hexatic) orientational order is described by a random-field Ising model, and so does not occur in d=2 (thin films) but does in d=3 (bulk). © 1991 The American Physical Society.

Date

13 May 1991

Publication

Physical Review Letters

Authors

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