Direct observation of stress accumulation and relaxation in small bundles of superconducting vortices in tungsten thin-films
Autor: | Guillamon, I., Suderow, H., Vieira, S., Sese, J., Cordoba, R., De Teresa, J. M., Ibarra, M. R. |
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Rok vydání: | 2011 |
Předmět: | |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevLett.106.077001 |
Popis: | We study the behavior of bundles of superconducting vortices when increasing the magnetic field using scanning tunneling microscopy and spectroscopy (STM/S) at 100 mK. Pinning centers are given by features on the surface corrugation. We find strong net vortex motion in a bundle towards a well defined direction. We observe continuos changes of the vortex arrangements, and identify small displacements, which stress and deform the vortex bundle, separated by larger re-arrangements or avalanches, which release accumulated stress. Comment: 4 pages, 4 figures, and 2 EPAPS figures |
Databáze: | arXiv |
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