Disordered type-II superconductors: a universal phase diagram for low-Tc systems

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Disordered type-II superconductors: a universal phase diagram for low-Tc systems

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Title: Disordered type-II superconductors: a universal phase diagram for low-Tc systems
Author: BANERJEE, SS; GROVER, AK; HIGGINS, MJ; MENON, GUTAM I; MISHRA, PK; PAL, D; RAMAKRISHNAN, S; RAO, TVCHANDRASEKHAR; RAVIKUMAR, G; SAHNI, VC; SARKAR, S; TOMY, CV
Abstract: A universal phase diagram for weakly pinned low-Tc type-II superconductors is revisited and extended with new proposals. The low-temperature “Bragg glass” phase is argued to transform first into a disordered, glassy phase upon heating. This glassy phase, a continuation of the high-field equilibrium vortex glass phase, then melts at higher temperatures into a liquid. This proposal provides an explanation for the anomalies observed in the peak effect regime of 2H–NbSe2 and several other low-Tc materials which is independent of the microscopic mechanisms of superconductivity in these systems.
URI: http://dx.doi.org/10.1016/S0921-4534(00)01767-6
http://hdl.handle.net/10054/1098
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1098
Date: 2001


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