Magnon Modes of Microstates and Microwave-Induced Avalanche in Kagome Artificial Spin Ice with Topological Defects
Bhat, V. S.; Watanabe, S.; Baumgaertl, K.; Kleibert, A.; Schoen, M. A. W.; Vaz, C. A. F.; Grundler, D.
2020

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Abstract

We investigate spin dynamics of microstates in artificial spin ice (ASI) in Ni81Fe19 nanomagnets arranged in an interconnected kagome lattice using microfocus Brillouin light scattering, broadband ferromagnetic resonance, magnetic force microscopy, x-ray photoemission electron microscopy, and simulations. We experimentally reconfigure microstates in ASI using a 2D vector field protocol and apply microwave-assisted switching to intentionally trigger reversal. Our work is key for the creation of avalanches inside the kagome ASI and reprogrammable magnonics based on ASIs.

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Title Magnon Modes of Microstates and Microwave-Induced Avalanche in Kagome Artificial Spin Ice with Topological Defects
Author(s) Bhat, V. S. ; Watanabe, S. ; Baumgaertl, K. ; Kleibert, A. ; Schoen, M. A. W. ; Vaz, C. A. F. ; Grundler, D.
Published in Physical Review Letters
Volume 125
Issue 11
Pages 117208
Date 2020-09-11
Keywords
DOI https://doi.org/10.1103/PhysRevLett.125.117208
Additional link Supplementary information
Laboratories LMGN
Record Appears in Scientific production and competences > STI - School of Engineering > IMX - Institute of Materials > LMGN - Laboratory of Nanoscale Magnetic Materials and Magnonics
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Grant FNS: 163016
Record creation date 2020-09-12

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