Torque-mixing magnetic resonance spectroscopy

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1126/science.aad2449
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Name affiliation
  1. National Research Council of Canada. National Institute for Nanotechnology
FormatText, Article
Journal titleScience
ISSN0036-8075
1095-9203
Volume350
Issue6262
Pages798–801
Abstract
A universal, torque-mixing method for magnetic resonance spectroscopy is presented. In analogy to resonance detection by magnetic induction, the transverse component of a precessing dipole moment can be measured in sensitive broadband spectroscopy, here using a resonant mechanical torque sensor. Unlike induction, the torque amplitude allows equilibrium magnetic properties to be monitored simultaneously with the spin dynamics. Comprehensive electron spin resonance spectra of a single-crystal, mesoscopic yttrium iron garnet disk at room temperature reveal assisted switching between magnetization states and mode-dependent spin resonance interactions with nanoscale surface imperfections. The rich detail allows analysis of even complex three-dimensional spin textures. The flexibility of microelectromechanical and optomechanical devices combined with broad generality and capabilities of torque-mixing magnetic resonance spectroscopy offers great opportunities for development of integrated devices.
Publication date
PublisherAmerican Association for the Advancement of Science
LanguageEnglish
Peer reviewedYes
NPARC number23001703
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Record modified2020-04-22
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