Dasgupta, Chandan ; Valls, Oriol T. (2003) Two-step melting of the vortex solid in layered superconductors with random columnar pins Physical Review Letters, 91 (12). 127002_1-127002_4. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v91/i12/e127002
Related URL: http://dx.doi.org/10.1103/PhysRevLett.91.127002
Abstract
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: | Article |
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Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 22781 |
Deposited On: | 24 Nov 2010 08:20 |
Last Modified: | 17 May 2016 06:45 |
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