Anomalous flux entry into Nb
- 1 April 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 25 (7) , 4479-4487
- https://doi.org/10.1103/physrevb.25.4479
Abstract
Measurements of superconducting transitions of Nb single crystals were performed. They allow the determination of the critical field for flux entry and its angular dependence. An anomalous cusplike feature was observed which cannot be explained by anisotropic Ginzburg-Landau theory. A model is proposed which assumes easy directions for entering flux lines. Agreement with the measurements is good.
Keywords
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