Fabrication and Properties of Longitudinal and Transverse Current Rectifier Devices Based on Superconducting Films With Arrays of Nanodefects
| Autor: | Elvira M. Gonzalez, J. L. Vicent, D. Perez de Lara, José Virgilio Anguita |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Superconductivity
Materials science Condensed matter physics Ratchet Condensed Matter Physics Ratchet effect Electronic Optical and Magnetic Materials Vortex Magnetic field Transverse plane Sputtering Condensed Matter::Superconductivity Electrical and Electronic Engineering Electron-beam lithography |
| Zdroj: | IEEE Transactions on Applied Superconductivity. 19:722-725 |
| ISSN: | 1558-2515 1051-8223 |
| DOI: | 10.1109/tasc.2009.2018060 |
| Popis: | Superconducting rectifiers have been fabricated by electron beam lithography, sputtering and ion etching techniques. The rectifiers are made growing Nb films on top of arrays of submicrometric Ni triangles. In this device, in the superconducting mixed state, injecting an input AC current yields an output DC voltage. This effect is due to the motion of the vortex lattice on periodic asymmetric pinning potentials. The vortex lattice dynamics follows ratchet effect behavior. The device shows two ratchet effects: Longitudinal and transverse. In the longitudinal ratchet effect the DC signal polarity could be switched increasing the applied magnetic field strength. Otherwise, the sign of the transverse effect does not change increasing the applied magnetic field. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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