作者
Víctor Rollano, Alicia Gomez, Alvaro Muñoz-Noval, María Vélez, MC De Ory, Mariela Menghini, Elvira M González, José Luis Vicent
发表日期
2021/8/16
期刊
Scientific Reports
卷号
11
期号
1
页码范围
16617
出版商
Nature Publishing Group UK
简介
Ratchet devices allow turning an ac input signal into a dc output signal. A ratchet device is set by moving particles driven by zero averages forces on asymmetric potentials. Hybrid nanostructures combining artificially fabricated spin ice nanomagnet arrays with superconducting films have been identified as a good choice to develop ratchet nanodevices. In the current device, the asymmetric potentials are provided by charged Néel walls located in the vertices of spin ice magnetic honeycomb array, whereas the role of moving particles is played by superconducting vortices. We have experimentally obtained ratchet effect for different spin ice I configurations and for vortex lattice moving parallel or perpendicular to magnetic easy axes. Remarkably, the ratchet magnitudes are similar in all the experimental runs; i. e. different spin ice I configurations and in both relevant directions of the vortex lattice motion. We have …
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V Rollano, A Gomez, A Muñoz-Noval, M Vélez… - Scientific Reports, 2021