title: Nanoscale spin wave localization using ferromagnetic resonance force microscopy.
abstract: We use the dipolar fields from a magnetic cantilever tip to generate localized spin wave precession modes in an in-plane magnetized, thin ferromagnetic film. Multiple resonances from a series of localized modes are detected by ferromagnetic resonance force microscopy and reproduced by micromagnetic models that also reveal highly anisotropic mode profiles. Modeled scans of line defects using the lowest-frequency mode provide resolution predictions of (94.5±1.5) nm in the field direction, and (390±2) nm perpendicular to the field.
authors.affiliation: Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA. hanjong.chia@nist.gov
authors.forename: Han-Jong
authors.initials: HJ
authors.lastname: Chia
authors.forename: Feng
authors.initials: F
authors.lastname: Guo
authors.forename: L M
authors.initials: LM
authors.lastname: Belova
authors.forename: R D
authors.initials: RD
authors.lastname: McMichael