Pinning of superconducting vortices in MoGe/Au Thin nano–squares
| Autor: | Lise Serrier-Garcia, Victor Moshchalkov, Joris Van de Vondel, Matias Timmermans |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Superconductivity
Physics Mesoscopic physics Condensed matter physics Scanning tunneling spectroscopy Energy Engineering and Power Technology 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Magnetic field Vortex Condensed Matter::Superconductivity Metastability 0103 physical sciences Electrical and Electronic Engineering 010306 general physics 0210 nano-technology Pinning force Hillock |
| Zdroj: | Physica C: Superconductivity and its Applications. 533:109-113 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/j.physc.2016.06.013 |
| Popis: | In this work, we report a scanning tunneling spectroscopy study of vortex patterns in mesoscopic superconducting squares and explore the impact of defects and corrugations inherently present in nanofabricated structures. We find that a hillock at the edge can function as an attractive or repulsive pinning center for vortices deforming the, theoretically predicted, symmetry-induced vortex configurations. In addition, we exploit the inherently present imperfections, creating metastable states, to visualize the dynamics of vortex penetration during magnetic field sweeps. |
| Databáze: | OpenAIRE |
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