title: Torque-mixing magnetic resonance spectroscopy.
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.
authors.affiliation: Department of Physics, University of Alberta, 4-181 Centennial Center for Interdisciplinary Science Edmonton, Alberta T6G 2E1, Canada. National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.
authors.forename: J E
authors.initials: JE
authors.lastname: Losby
authors.affiliation: Department of Physics, University of Alberta, 4-181 Centennial Center for Interdisciplinary Science Edmonton, Alberta T6G 2E1, Canada. National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.
authors.forename: F
authors.initials: F
authors.lastname: Fani Sani
authors.affiliation: Department of Physics, University of Alberta, 4-181 Centennial Center for Interdisciplinary Science Edmonton, Alberta T6G 2E1, Canada.
authors.forename: D T
authors.initials: DT
authors.lastname: Grandmont
authors.affiliation: Department of Physics, University of Alberta, 4-181 Centennial Center for Interdisciplinary Science Edmonton, Alberta T6G 2E1, Canada. National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.
authors.forename: Z
authors.initials: Z
authors.lastname: Diao
authors.affiliation: National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Belov
authors.affiliation: Department of Physics, University of Alberta, 4-181 Centennial Center for Interdisciplinary Science Edmonton, Alberta T6G 2E1, Canada. National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.
authors.forename: J A J
authors.initials: JA
authors.lastname: Burgess
authors.affiliation: Department of Physics, University of Alberta, 4-181 Centennial Center for Interdisciplinary Science Edmonton, Alberta T6G 2E1, Canada. National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.
authors.forename: S R
authors.initials: SR
authors.lastname: Compton
authors.affiliation: Department of Physics, University of Alberta, 4-181 Centennial Center for Interdisciplinary Science Edmonton, Alberta T6G 2E1, Canada. National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.
authors.forename: W K
authors.initials: WK
authors.lastname: Hiebert
authors.affiliation: National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada.
authors.forename: D
authors.initials: D
authors.lastname: Vick
authors.affiliation: Electrical and Computer Engineering, University of Manitoba, 75 Chancellor's Circle, Winnipeg, Manitoba R3T 5V6, Canada.
authors.forename: K
authors.initials: K
authors.lastname: Mohammad
authors.affiliation: Electrical and Computer Engineering, University of Manitoba, 75 Chancellor's Circle, Winnipeg, Manitoba R3T 5V6, Canada.
authors.forename: E
authors.initials: E
authors.lastname: Salimi
authors.affiliation: Electrical and Computer Engineering, University of Manitoba, 75 Chancellor's Circle, Winnipeg, Manitoba R3T 5V6, Canada.
authors.forename: G E
authors.initials: GE
authors.lastname: Bridges
authors.affiliation: Electrical and Computer Engineering, University of Manitoba, 75 Chancellor's Circle, Winnipeg, Manitoba R3T 5V6, Canada.
authors.forename: D J
authors.initials: DJ
authors.lastname: Thomson
authors.affiliation: Department of Physics, University of Alberta, 4-181 Centennial Center for Interdisciplinary Science Edmonton, Alberta T6G 2E1, Canada. National Institute for Nanotechnology, 11421 Saskatchewan Drive, Edmonton, Alberta T6G 2M9, Canada. mark.freeman@ualberta.ca.
authors.forename: M R
authors.initials: MR
authors.lastname: Freeman