We present experimental and numerical results for the dynamic response of a connected Kagome artificial spin ice. We explicitly consider the effect of the vertex magnetization configuration on the ferromagnetic resonance (FMR) mode characteristics using micromagnetic simulations. We show that the bulk mode frequencies of each single-domain thin-film segment not only depend on the direction of the segment's easy-axes with respect to the applied magnetic field but also depend on the vertex magnetization configurations of nearby vertices. Therefore, the FMR modes can be controlled by altering the vertex magnetization texture. Moreover, we distinguish between vertex center modes (VCMs) and localized domain wall (LDW) modes. We show that the LDW mode evolves during the nucleation process of domain walls and that VCMs and LDW modes can be controlled using specific field protocols, which have important implications for future design of magnonic and spintronic devices.
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25 January 2021
Research Article|
January 28 2021
Vertex dependent dynamic response of a connected Kagome artificial spin ice
Special Collection:
Mesoscopic Magnetic Systems: From Fundamental Properties to Devices
Ali Frotanpour
;
Ali Frotanpour
a)
Department of Physics and Astronomy, University of Kentucky
, 505 Rose Street, Lexington, Kentucky 40506-0055, USA
a)Author to whom correspondence should be addressed: [email protected]
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Justin Woods;
Justin Woods
Department of Physics and Astronomy, University of Kentucky
, 505 Rose Street, Lexington, Kentucky 40506-0055, USA
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Barry Farmer;
Barry Farmer
Department of Physics and Astronomy, University of Kentucky
, 505 Rose Street, Lexington, Kentucky 40506-0055, USA
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Amrit P. Kaphle;
Amrit P. Kaphle
Department of Physics and Astronomy, University of Kentucky
, 505 Rose Street, Lexington, Kentucky 40506-0055, USA
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Lance E. De Long
Lance E. De Long
Department of Physics and Astronomy, University of Kentucky
, 505 Rose Street, Lexington, Kentucky 40506-0055, USA
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a)Author to whom correspondence should be addressed: [email protected]
Note: This paper is part of the APL Special Collection on Mesoscopic Magnetic Systems: From Fundamental Properties to Devices.
Appl. Phys. Lett. 118, 042410 (2021)
Article history
Received:
October 27 2020
Accepted:
January 15 2021
Citation
Ali Frotanpour, Justin Woods, Barry Farmer, Amrit P. Kaphle, Lance E. De Long; Vertex dependent dynamic response of a connected Kagome artificial spin ice. Appl. Phys. Lett. 25 January 2021; 118 (4): 042410. https://doi.org/10.1063/5.0035195
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