Electrical Detection of Spin Wave Resonance in a Permalloy Thin Strip
Ziqian Wang, Wei Lu, Bogen Wang
TL;DR
This paper demonstrates electrical detection of spin wave resonance in permalloy, revealing unique anti-symmetrical spectra and field-dependent signal amplitudes, advancing understanding of spin dynamics in ferromagnetic materials.
Contribution
It introduces a novel electrical detection method for SWR in permalloy and uncovers distinctive spectral features not observed in ferromagnetic resonance.
Findings
SWR signals depend on external field direction
SWR spectra are always anti-symmetrical
Unusual spin dynamics observed under resonance conditions
Abstract
We investigated the microwave-induced DC response of spin wave resonance (SWR) in a permalloy thin strip via electrical detection. Our experimental results obtained by sweeping the external field reveal that: 1. the amplitude of SWR signals depend on the direction of external field and, 2. unlike the DC response of ferromagnetic resonance, SWR spectra are always anti-symmetrical. The spin dynamics are discussed based on these unusual signals in resonant condition.
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Taxonomy
TopicsQuantum and electron transport phenomena · Quantum optics and atomic interactions · Magnetic properties of thin films