Vortex transport and pinning in conformal pinning arrays
نویسندگان
چکیده
منابع مشابه
Twin-boundary pinning of superconducting vortex arrays.
We discuss the low-temperature dynamics of magnetic flux lines in high-temperature superconductors in the presence of a family of parallel twin planes that contain the c axis. A current applied along the twin planes drives flux motion in the direction transverse to the planes and acts like an electric field applied to one-dimensional carriers in disordered semiconductors. As in flux arrays with...
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We have investigated the vortex dynamics in superconducting thin film devices with non-uniform patterns of artificial pinning centers (APCs). The magneto-transport properties of a conformal crystal and a randomly diluted APC pattern are compared with that of a triangular reference lattice. We have found that in both cases the magneto-resistance below the first matching field of the triangular r...
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We studied the effect of disorder on superconducting vortex pinning produced by arrays of artificial pinning sites. The magnetoresistance of samples with pinning configurations varying from a triangular array to an almost random distribution of pinning sites provides a controlled system for such studies. Interestingly even small degrees of order are sufficient to produce enhanced pinning at wel...
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Vortex matter in high temperature superconductors has many peculiar properties such as melting of the vortex lattice, creation of new vortex-liquid phases etc. These effects are not seen in conventional superconductors. This is mainly due to the fact that HTc compounds are strongly type two superconductors with Ginzburg-Landau ratio up to ~110 that makes thermal and quantum fluctuations more pr...
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ژورنال
عنوان ژورنال: Physica C: Superconductivity and its Applications
سال: 2014
ISSN: 0921-4534
DOI: 10.1016/j.physc.2014.04.038