DOI | Trouver le DOI : https://doi.org/10.1038/nnano.2016.226 |
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Auteur | Rechercher : Wu, Marcelo1; Rechercher : Wu, Nathanael L.-Y.1; Rechercher : Firdous, Tayyaba1; Rechercher : Fani Sani, Fatemeh1; Rechercher : Losby, Joseph E.1; Rechercher : Freeman, Mark R.1; Rechercher : Barclay, Paul E.1 |
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Affiliation | - Conseil national de recherches du Canada. Nanotechnologie
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Format | Texte, Article |
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Résumé | Nanophotonic optomechanical devices allow the observation of nanoscale vibrations with a sensitivity that has dramatically advanced the metrology of nanomechanical structures and has the potential to impact studies of nanoscale physical systems in a similar manner. Here we demonstrate this potential with a nanophotonic optomechanical torque magnetometer and radiofrequency (RF) magnetic susceptometer. Exquisite readout sensitivity provided by a nanocavity integrated within a torsional nanomechanical resonator enables observations of the unique net magnetization and RF-driven responses of single mesoscopic magnetic structures in ambient conditions. The magnetic moment resolution is sufficient for the observation of Barkhausen steps in the magnetic hysteresis of a lithographically patterned permalloy island. In addition, significantly enhanced RF susceptibility is found over narrow field ranges and attributed to thermally assisted driven hopping of a magnetic vortex core between neighbouring pinning sites. The on-chip magnetosusceptometer scheme offers a promising path to powerful integrated cavity optomechanical devices for the quantitative characterization of magnetic micro- and nanosystems in science and technology. |
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Date de publication | 2016-10-31 |
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Maison d’édition | Nature Publishing Group |
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Dans | |
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Langue | anglais |
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Publications évaluées par des pairs | Oui |
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Numéro NPARC | 23003218 |
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Exporter la notice | Exporter en format RIS |
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Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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Identificateur de l’enregistrement | 78c6c9ba-31bd-400f-b22b-ad56fc9b2426 |
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Enregistrement créé | 2018-05-08 |
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Enregistrement modifié | 2020-03-16 |
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