Experimental vortex ratchet effect in nanostructured superconductors
Superconducting Nb thin films were grown on different arrays of triangle-shape metallic islands. The vortex lattice dynamics could be strongly modified by these asymmetric vortex traps. These asymmetric pinning potentials lead to a rectification effect on the vortex motion: Injecting an ac supercurr...
| Autores: | , , , , , |
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| Tipo de recurso: | capítulo de libro |
| Fecha de publicación: | 2006 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/53561 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/53561 |
| Access Level: | acceso abierto |
| Palabra clave: | 538.9 Rectifier Quanta Física de materiales Física del estado sólido 2211 Física del Estado Sólido |
| Sumario: | Superconducting Nb thin films were grown on different arrays of triangle-shape metallic islands. The vortex lattice dynamics could be strongly modified by these asymmetric vortex traps. These asymmetric pinning potentials lead to a rectification effect on the vortex motion: Injecting an ac supercurrent on the sample yields a net dc vortex flow. This vortex ratchet ffect is adiabatic and reversible: The effect is frequency independent and the polarity of the dc voltage output could be tuned by the applied magnetic fields and the input ac currents. |
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