Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1820236 | Physica C: Superconductivity and its Applications | 2008 | 4 Pages |
Abstract
Third-harmonic susceptibility has been employed to probe the order-disorder transition of vortex matter of a good-quality sample of MgB2 with random disorder. In the major part of the temperature interval, the measured boundary line can be adjusted by a power-law function, in accordance with theoretical models for the melting of the ordered phase of a 3D vortex-glass. For larger temperatures, however, thermally-induced depinning anticipates disorder, which is also predictable for the vortex matter behavior of a clean system with small amounts of randomly distributed disorder, as is the case of the Mg0.95B2 sample studied here.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
A.A.M. Oliveira, P.A. Sharma, N. Hur, S-W. Cheong, W.A. Ortiz,