Berlin 2018 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 46: Magnonics II
MA 46.4: Vortrag
Donnerstag, 15. März 2018, 16:00–16:15, H 0110
Spin waves along domain walls in magnetic dots — Antonio Lara1, Konstantin Y. Guslienko2,3, Jose Luis Prieto4, and •Farkhad G Aliev1 — 1Universidad Autonoma de Madrid, 28049 Cantoblanco-Madrid, Spain — 2Universidad del País Vasco, 20018 San Sebastián, Spain — 3IKERBASQUE, 48013, Bilbao, Spain — 4Universidad Politécnica de Madrid, 28031, Spain
We discuss quasi one-dimensional spin waves in Permalloy dots of different geometries and in different magnetic states. Recent studies allowed observation of spin waves along domain walls in rectangular, circular [1] and triangular dos in the ground or metastable states. Triangular dots could also present edge pinned inhomogeneous magnetic states, depending on the direction of the external magnetic field. These edge domain walls yield the interesting, and potentially applicable in real devices property of broadband spin waves confinement to the edges of the structure [2,3] with capabilities to be redirected at angles exceeding 100 degrees. We also show how these waves could be generalized for arbitrary shapes and propose few devices (such as interferometers, controllers or splitters) where edge spin waves could be implemented. [1] F.G. Aliev, et al., Phys. Rev. B 84, 144406 (2011); [2] A. Lara, V. Metlushko, F. G. Aliev, J. Appl. Phys. 114, 213905 (2013); [3] A. Lara, J. Robledo, K.Y. Guslienko, F. G. Aliev, Sci. Reports, 7: 5597 (2017).