Dresden 2017 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 67: Poster 4

MA 67.3: Poster

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

Spatial resolved mapping of spin-wave modes in YIG film excited by an antenna — •Rouven Dreyer, Niklas Liebing, and Georg Woltersdorf — Martin Luther University Halle-Wittenberg, Institute of Physics, Halle(Saale), Germany

Spin-wave propagation in magnetic materials may in the future allow to transmit and process information in an energy-efficient manner. Yttrium Iron Garnet (YIG) is one of the most interesting materials for spin wave based microwave devices due to its low Gilbert damping parameter and the correspondingly large spin wave propagation length. Phase resolved imaging of spin wave excitations is possible by time resolved Kerr microscopy. Here, we present the imaging of Damon-Eshbach and backward volume spin-wave modes in a 200 nm YIG film. Our experiments allow to determine the spin-wave dispersion for different configurations of in-plane wave vector and magnetization. Different antenna structures for spin-wave excitations are investigated.