Berlin 2018 – scientific programme

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MA: Fachverband Magnetismus

MA 21: Poster I

MA 21.39: Poster

Tuesday, March 13, 2018, 09:30–13:00, Poster A

Spin Wave Propagation in Thin Films with Perpendicular Magnetic Anisotropy — •Matías Grassi, Yves Henry, and Matthieu Bailleul — Institut de Physique et Chimie des Matériaux de Strasbourg, CNRS, Université de Strasbourg, B.P. 43, 67034 Strasbourg Cedex 2, France.

We present a study of the spin wave (SW) dynamics in thin films with perpendicular magnetic anisotropy. The interactions between the SW and different magnetic textures were studied by a dynamic matrix approach using a custom developed code [1]. In particular, we analyze the spin wave propagation in samples with a stripe domain structure and its dependence as function of the applied magnetic field. We focus on two particular questions: how the evolution of spin wave dispersions in the saturated state could explain the formation of the stripes domains; and how the domain walls within the stripe structure can be used as waveguides for SW —the so-called Domain Wall Channeled Spin Waves (DWCSW)[2]. These simulations are used to design Propagating Spin Wave Spectroscopy experiments, allowing one to measure the SW frequencies within a determined wave length range.
[1] Y. Henry, O. Gladii and M. Bailleul, https://arxiv.org/abs/1611.06153

[2] SWANGATE ANR-16-CE24-0027-01