Regensburg 2016 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 12: Postersession DS

DS 12.24: Poster

Montag, 7. März 2016, 17:00–19:00, Poster A

Photo-induced dynamics in combined magnonic and phononic multilayer systems — •Markus Müller1, Dennis Meyer1, Henning Ulrichs1, Maria Mansurova1,3, Florian Döring2, Jakob Walowski3, and Markus Münzenberg31I. Physikalisches Institut Georg-August Universität, Göttingen, Germany — 2Institut für Materialphysik Georg-August Universität, Göttingen, Germany — 3Physikalisches Institut Ernst Moritz Arndt Universität, Greifswald, Germany

We present investigation of elastic dynamics in periodic and aperiodic thin film multilayers. In particular we discuss dynamics in samples combining alternating layers of tungsten and polycarbonate, grown by pulsed laser deposition. Experiments were carried out by means of time-resolved all-optical pump-probe spectroscopy. The findings are supported by simulations, and suggest the possibility to block a wide range of phonons. Downscaling of the design principle should enable the realization of a thermally insulating medium.

Further functionalization was obtained by incorporating ferromagnetic layers. We discuss how magneto-elastic coupling can be exploited in order to excite spin waves simultaneously with the elastic modes.

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DPG-Physik > DPG-Verhandlungen > 2016 > Regensburg