Regensburg 2019 – scientific programme

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MA: Fachverband Magnetismus

MA 51: Magnetism Poster B

MA 51.6: Poster

Thursday, April 4, 2019, 15:00–18:00, Poster C

Spin- and charge transport at THz frequencies in metallic multilayers — •Marcel Burgard¹, Dennis M. Nenno¹, Hans Christian Schneider¹, Tobias Kampfrath^2,3, and Lukáš Nádvorník³ — ¹Physics Department and Research Center OPTIMAS, TU Kaiserslautern — ²Department of Physical Chemistry, Fritz Haber Institute of the Max Planck Society, Berlin — ³Department of Physics, Freie Universität Berlin

We theoretically investigate spin and charge currents in metallic films and magnetic multilayers. These currents are driven by THz-fields via the inverse spin-Hall effect [1]. Frequencies in the THz regime have been shown to drastically alter the transport properties for electrons close to the Fermi energy, as they are described a wave-diffusion equation instead of the quasi-static Fick’s law [2]. Here, we solve the wave-diffusion equations self-consistently with Maxwell’s equations for the fields set up by charge accumulation and study the effects of screening on the transport at THz frequencies.

[1] L. Nadvornik et al., in preparation

[2] Y. H. Zhu, B. Hillebrands, and H. C. Schneider, Phys. Rev. B 78, 054429 (2008)