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.
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|
|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|
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