Theory of magnon diffuse scattering in scanning transmission electron microscopy
Keenan Lyon, Anders Bergman, Paul Zeiger, Demie Kepaptsoglou, Quentin M. Ramasse, Juan Carlos Idrobo, Ján Rusz
Abstract
We present a theory and a simulation of diffuse scattering due to the excitation of magnons in scanning transmission electron microscopy. The calculations indicate that magnons can present atomic contrast when detected by electron energy-loss spectroscopy using atomic-size electron beams. The results presented here indicate that the intensity of the magnon diffuse scattering in bcc iron at 300 K is 4 orders of magnitude weaker than the intensity of thermal diffuse scattering arising from atomic vibrations.
Topics & Concepts
MagnonScatteringEnergy filtered transmission electron microscopyTransmission electron microscopyScanning transmission electron microscopySpectroscopyScanning electron microscopeElectronElectron energy loss spectroscopyAtomic physicsMolecular physicsChemistryPhysicsMaterials scienceCondensed matter physicsOpticsFerromagnetismQuantum mechanicsAdvanced Electron Microscopy Techniques and ApplicationsForce Microscopy Techniques and ApplicationsMagnetic properties of thin films