Dresden 2017 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 67: Poster 4

MA 67.7: Poster

Freitag, 24. März 2017, 09:30–13:00, P2-OG3

Non-reciprocal spin-wave edge modes — •Philipp Pirro, Qi Wang, and Burkard Hillebrands — Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern, D-67663 Kaiserslautern, Germany

Non-reciprocal spin waves modes like the magneto-static surface wave (aka Damon-Eshbach mode) are well known phenomena based on the structure of the magnetic dipol-dipol interaction. By micromagnetic simulations, we show how these modes can be used to construct out-of-plane magnetized magnonic systems with chiral edge modes. By introducing defects in our structures, we investigate the protection of these unidirectional modes against back scattering. Interestingly, the exchange interaction has an important effect on the scattering characteristics since it influences the profiles and the frequency spacing of the individual modes. Based on these findings, we design non-reciprocal spin-wave elements which can be used in future magnonic logic elements as spin-wave isolators or circulators.