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Phase-locking of multiple magnetic droplets by a microwave magnetic field
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Material Physics, MF.ORCID iD: 0000-0002-3513-6608
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2017 (English)In: AIP Advances, ISSN 2158-3226, E-ISSN 2158-3226, Vol. 7, no 5, 056019Article in journal (Refereed) Published
Abstract [en]

Manipulating dissipative magnetic droplet is of great interest for both the fundamental and technological reasons due to its potential applications in the high frequency spin-torque nano-oscillators. In this paper, a magnetic droplet pair localized in two identical or non-identical nano-contacts in a magnetic thin film with perpendicular anisotropy can phase-lock into a single resonance state by using an oscillating microwave magnetic field. This resonance state is a little away from the intrinsic precession frequency of the magnetic droplets. We found that the phase-locking frequency range increases with the increase of the microwave field strength. Furthermore, multiple droplets with a random initial phase can also be synchronized by a microwave field.

Place, publisher, year, edition, pages
American Institute of Physics Inc. , 2017. Vol. 7, no 5, 056019
Keyword [en]
Drops, Locks (fasteners), Magnetic fields, Magnetic thin films, Microwaves, Frequency ranges, High frequency HF, Magnetic droplets, Microwave field, Microwave magnetic field, Perpendicular anisotropy, Precession frequency, Single resonance, Magnetism
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-207338DOI: 10.1063/1.4975660ISI: 000402797100176Scopus ID: 2-s2.0-85011349838OAI: oai:DiVA.org:kth-207338DiVA: diva2:1106372
Note

QC 20170607

Available from: 2017-06-07 Created: 2017-06-07 Last updated: 2017-07-03Bibliographically approved

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