Dasgupta, Chandan and Valls, Oriol T (2003) Two-step melting of the vortex solid in layered superconductors with random columnar pins. In: Physical Review Letters, 91 (12). 127002-1-127002-4.
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We consider the melting of the vortex solid in highly anisotropic layered superconductors with a small concentration of random columnar pinning centers. Using large-scale numerical minimization of a free-energy functional, we find that melting of the low-temperature, nearly crystalline vortex solid (Bragg glass) into a vortex liquid occurs in two steps as the temperature increases: the Bragg glass and liquid phases are separated by an intermediate Bose glass phase. A suitably defined local melting temperature exhibits spatial variation similar to that observed in experiments.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to The American Physical Society.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Physics|
|Date Deposited:||24 Nov 2009 06:23|
|Last Modified:||19 Sep 2010 04:57|
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