title: Resonances in ferromagnetic gratings detected by microwave photoconductivity.
abstract: We investigate the impact of microwave excited spin excitations on the dc charge transport in a ferromagnetic (FM) grating. We observe both resonant and nonresonant microwave photoresistance, which are caused, respectively, by spin and charge dissipations of the microwave power into the FM. A macroscopic model based on Maxwell and Landau-Lifschitz equations reveals the mixing of spin and charge dissipations, which shows that the ferromagnetic anti-resonance is shifted when the conductivity is anisotropic. We find that the microwave photoconductivity provides a powerful new tool to study the interplay between photonic, spintronic, and charge effects in FM microstructures.
authors.affiliation: Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany.
authors.forename: Y S
authors.initials: YS
authors.lastname: Gui
authors.forename: S
authors.initials: S
authors.lastname: Holland
authors.forename: N
authors.initials: N
authors.lastname: Mecking
authors.forename: C-M
authors.initials: CM
authors.lastname: Hu