Manipulating Multivortex States in Superconducting Structures
| Autor: | Raffi Budakian, Hryhoriy Polshyn, Tyler Naibert |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Superconductivity
Materials science Condensed Matter - Mesoscale and Nanoscale Physics Fluxon Condensed matter physics Physics::Instrumentation and Detectors Condensed Matter - Superconductivity Mechanical Engineering FOS: Physical sciences Bioengineering 02 engineering and technology General Chemistry Magnetic particle inspection 021001 nanoscience & nanotechnology Condensed Matter Physics Vortex Superconductivity (cond-mat.supr-con) Condensed Matter::Superconductivity Mesoscale and Nanoscale Physics (cond-mat.mes-hall) General Materials Science Magnetic force microscope Silicon cantilever 0210 nano-technology |
| Zdroj: | Nano Letters. 19:5476-5482 |
| ISSN: | 1530-6992 1530-6984 |
| Popis: | We demonstrate a method for manipulating small ensembles of vortices in multiply-connected superconducting structures. A micron-size magnetic particle attached to the tip of a silicon cantilever is used to locally apply magnetic flux through the superconducting structure. By scanning the tip over the surface of the device, and by utilizing the dynamical coupling between the vortices and the cantilever, a high-resolution spatial map of the different vortex configurations is obtained. Moving the tip to a particular location in the map stabilizes a distinct multi-vortex configuration. Thus, the scanning of the tip over a particular trajectory in space permits non-trivial operations to be performed, such as braiding of individual vortices within a larger vortex ensemble -- a key capability required by many proposals for topological quantum computing. Comment: 14 pages, 9 figures |
| Databáze: | OpenAIRE |
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