Regensburg 2013 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 50: Poster II
MA 50.78: Poster
Freitag, 15. März 2013, 10:30–13:30, Poster D
Nonlinear emission of spin-wave caustics from an edge mode of a micro-structured Co2Mn0.6Fe0.4Si waveguide — •Thomas Sebastian1,2, Philipp Pirro1, Thomas Brächer1,2, Takahide Kubota3, Hiroshi Naganuma4, Alexander A. Serga1, Mikihiko Oogane4, Yasuo Ando4, and Burkard Hillebrands1 — 1Fachbereich Physik and Landesforschungszentrum OPTIMAS, TU Kaiserslautern, 67663 Kaiserslautern, Germany — 2Graduate School Materials Science in Mainz, 67663 Kaiserslautern, Germany — 3WPI Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan — 4Department of Applied Physics, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
The low Gilbert damping of the Heusler compound Co2Mn0.6Fe0.4Si (CMFS) makes the material a promising candidate for the utilization in perspective magnon-spintronic devices [1].
We present the nonlinear emission of spin-wave caustics [2] from a localized edge mode [3] in a CMFS waveguide at twice and three times the excitation frequency observed by Brillouin light scattering microscopy. The propagation characteristics of these strongly directed beams are confirmed by analytic modeling using the anisotropic dispersion for spin waves in magnetic thin films.
We acknowledge support by the DFG Research Unit 1464 and the Strategic Japanese-German Joint Research from JST: ASPIMATT.
[1] T. Sebastian, et al., Appl. Phys. Lett. 100, 112402 (2012).
[2] T. Schneider, et al., Phys. Rev. Lett. 104, 197203 (2010).
[3] C. Bayer, et al., Phys. Rev. B 69, 134401 (2004).