title: Spin-wave interference in three-dimensional rolled-up ferromagnetic microtubes.
abstract: We have investigated spin-wave excitations in rolled-up Permalloy microtubes using microwave absorption spectroscopy. We find a series of quantized azimuthal modes which arise from the constructive interference of Damon-Eshbach-type spin waves propagating around the circumference of the microtubes, forming a spin-wave resonator. The mode spectrum can be tailored by the tube's radius and number of rolled-up layers.
authors.affiliation: Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstrasse 11, D-20355 Hamburg, Germany.
authors.forename: Felix
authors.initials: F
authors.lastname: Balhorn
authors.forename: Sebastian
authors.initials: S
authors.lastname: Mansfeld
authors.forename: Andreas
authors.initials: A
authors.lastname: Krohn
authors.forename: Jesco
authors.initials: J
authors.lastname: Topp
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Hansen
authors.forename: Detlef
authors.initials: D
authors.lastname: Heitmann
authors.forename: Stefan
authors.initials: S
authors.lastname: Mendach