Continuous melting of a partially pinned two-dimensional vortex lattice in a square array of pinning centers

Joseph, Toby and Dasgupta, Chandan (2002) Continuous melting of a partially pinned two-dimensional vortex lattice in a square array of pinning centers. In: Physical Review B, 66 . pp. 212506-1.

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Abstract

The structure and equilibrium properties of a two-dimensional system of superconducting vortices in a periodic pinning potential with square symmetry are studied numerically. For a range of the strength of the pinning potential, the low-temperature crystalline state exhibits only one of the two basic periodicities (in the x and y directions) of the pinning potential. This "partially pinned" solid undergoes a continuous melting transition to a weakly modulated liquid as the temperature is increased. A spin model, constructed using symmetry arguments, is shown to reproduce the critical behavior at this transition.

Item Type:	Journal Article
Publication:	Physical Review B
Publisher:	American Physical Society
Additional Information:	Copyright for this article belongs to American Physical Society (APS)
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	18 Jan 2007
Last Modified:	19 Sep 2010 04:14
URI:	http://eprints.iisc.ac.in/id/eprint/1363

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