title: Magnon lifetimes on the Fe(110) surface: the role of spin-orbit coupling.
abstract: We provide direct experimental evidence which demonstrates that, in the presence of a large spin-orbit coupling, the lifetime, amplitude, group, and phase velocity of the magnons propagating along two opposite (but crystallographically equivalent) directions perpendicular to the magnetization are different. A real time and space representation reveals that magnons with the same energy (eigenfrequency) propagate differently along two opposite directions. Our findings can inspire ideas for designing new spintronic devices.
authors.affiliation: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle, Germany. zakeri@mpi-halle.de
authors.forename: Kh
authors.initials: Kh
authors.lastname: Zakeri
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
authors.forename: T-H
authors.initials: TH
authors.lastname: Chuang
authors.forename: J
authors.initials: J
authors.lastname: Kirschner