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MA: Fachverband Magnetismus

MA 42: Posters Magnetism I

MA 42.36: Poster

Mittwoch, 18. März 2020, 15:00–18:00, P3

Spin- and charge transport at THz frequencies in metallic multilayers: A 2-dimensional model — •Marcel Burgard, Dennis M. Nenno, and Hans Christian Schneider — Physics Department, TU Kaiserslautern, Kaiserslautern, Germany

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 (ISHE) [1,2]. Frequencies in the THz regime have been shown to drastically alter the transport properties for electrons close to the Fermi energy [3], as they are described by wave-diffusion equations [3,4]. In order to study the impact of screening and ISHE on transport at THz frequencies we extend our model for an effectively one-dimensional calculation [3] to two dimensions and investigate the interaction between currents in different spatial directions.

[1] T. Kampfrath et al., Nature Nanotech 8, 256 (2013).

[2] T. Seifert, et al., Nature Photon 10, 483 (2016).

[3] L. Nadvornik et al., in preparation (2020).

[4] Y.-H. Zhu et al., Phys. Rev. B 78, 054429 (2008).