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Circumventing magnetostatic reciprocity: a diode for magnetic fields
journal contribution
posted on 2023-06-09, 15:36 authored by J Prat Camps, P Maurer, G Kirchmair, O Romero-IsartLorentz reciprocity establishes a stringent relation between electromagnetic fields and their sources. For static magnetic fields, a relation between magnetic sources and fields can be drawn in analogy to the Green’s reciprocity principle for electrostatics. So far, the magnetostatic reciprocity principle remains unchallenged and the magnetostatic interaction is assumed to be symmetric (reciprocal). Here, we theoretically and experimentally show that a linear and isotropic electrically conductive material moving with constant velocity is able to circumvent the magnetostatic reciprocity principle and realize a diode for magnetic fields. This result is demonstrated by measuring an extremely asymmetric magnetic coupling between two coils that are located near a moving conductor. The possibility to generate controlled unidirectional magnetic couplings implies that the mutual inductances between magnetic elements or circuits can be made extremelly asymmetric. We anticipate that this result will provide novel possibilities for applications and technologies based on magnetically coupled elements and might open fundamentally new avenues in artificial magnetic spin systems.
History
Publication status
- Published
File Version
- Accepted version
Journal
Physical Review LettersISSN
0031-9007Publisher
American Physical SocietyExternal DOI
Issue
213903Volume
121Department affiliated with
- Informatics Publications
Research groups affiliated with
- Creative Technology Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-10-24First Open Access (FOA) Date
2018-10-24First Compliant Deposit (FCD) Date
2018-10-23Usage metrics
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