Berlin 2018 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 52: Poster II
MA 52.71: Poster
Donnerstag, 15. März 2018, 15:00–18:00, Poster C
Spin-wave transport and higher harmonic generation in Néel walls — •Kai Wagner1,2, Olga Gladii3, David Halley3, Yves Henry3, Matthieu Bailleul3, Attila Kákay1, and Helmut Schultheiss1,2 — 1Helmholtz-Zentrum Dresden - Rossendorf, Institute of Ion Beam Physics and Materials Research, 01328 Dresden, Germany — 2TU Dresden, 01307, Dresden, Germany — 3Institut de physique et chimie des matériaux de Strasbourg, 67034 Strasbourg, France
Magnetic domain walls are promising candidates for flexible and reconfigurable waveguides in magnonic circuitry [1,2,3]. We investigate spin-wave transport along 90∘ Néel walls in microstructured thin-film elements made of Py as well as Fe [4] by µBLS [5] and via micromagnetic simulations [6]. The experiments cover the range from thermal excitation, through the linear regime up to non-linear excitation and higher harmonic generation associated with the excitation of previously not observed guided spin-wave modes. Additionally, first experimental observations of spin-wave transport along interconnected Néel walls in flux closure domain structures and along walls, which suddenly change their direction at the edge of the microstructure are presented.
References [1] D. Grundler, Nat. Phys., 11, 438-441 (2015). [2] F. Garcia-Sanchez et al., PRL, 114, 247206 (2015). [3] K. Wagner et al., Nature Nanotechnology, 11, 432-436 (2016). [4] O. Gladii et al., Phys. Rev. B 96, 174420 (2017). [5] T. Sebastian et al., Front. Phys., 3, 35 (2015). [6] A. Vansteenkiste et al., AIP Advances, 4, 107133 (2014).