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Angular-Dependent Dynamic Response and Magnetization Reversal in Fibonacci-Distorted, Kagome Artificial Spin Ice

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arxiv 2102.07532 v1 pith:PYJ7JN77 submitted 2021-02-15 cond-mat.mes-hall physics.app-ph

Angular-Dependent Dynamic Response and Magnetization Reversal in Fibonacci-Distorted, Kagome Artificial Spin Ice

Ali Frotanpour , Justin Woods , Barry Farmer , Amrit P. Kaphle , Lance E. DeLong This is my paper
classification cond-mat.mes-hall physics.app-ph
keywords fibonacci-distortedfieldmagneticorientationreversalappliedartificialdepend
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We have measured the angular dependence of ferromagnetic resonance (FMR) spectra for Fibonacci-distorted, Kagome artificial spin ice (ASI). The number of strong modes in the FMR spectra depend on the orientation of the applied DC magnetic field. In addition, discontinuities observed in the FMR field-frequency dispersion curves also depend on DC field orientation, and signal a multi-step DC magnetization reversal, which is caused by the reduced energy degeneracy of Fibonacci-distorted vertices. The results suggest the orientation of applied magnetic field and severity of Fibonacci distortion constitute control variables for FMR modes and multi-step reversal in future magnonic devices and magnetic switching systems.

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