Berlin 2015 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 20: POSTER Ib

MA 20.39: Poster

Dienstag, 17. März 2015, 09:30–13:00, Poster A

Correlating spin orbit effects and structural inversion asymmetry in multilayer stacks — •Samridh Jaiswal^1,2, Berthold Ocker², Gerhard Jakob¹, and Mathias Kläui¹ — ¹Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany — ²SINGULUS TECHNOLOGIES AG, Hanauer Landstrasse 103, 63796 Kahl am Main, Germany

Recently there has been wide spread interest to exploit multilayer materials and use them for memory and logic devices based on current-induced magnetization dynamics. One of the associated problems to overcome is being able to achieve low threshold currents for switching of the magnetic state and to achieve a high thermal stability in these devices. A possible solution to solve the issues associated with memory based devices is to achieve a strong perpendicular magnetic anisotropy[1] and then to use Structural Inversion Asymmetry (SIA) in multilayers to study the effects of Spin Orbit Torques(SOTs) in the presence of the Dzyaloshinskii Moriya interaction. Current induced magnetization switching is gathering much interest as a means of low power magnetic switching and relies on the spin orbit effects in these materials [2]. In this contribution we investigate the growth of multilayer stacks with SIA and we discuss the effects of the underlayers on the magnetic anisotropy and the viability to use these materials for studying SOTs. Financial support by the EU Marie Curie ITN project WALL is gratefully acknowledged.

[1] Yang, H. X. et al. Phys. Rev. B, 84, 054401 (2011) [2] Lo Conte, R. et al , Appl. Phys. Lett., 105, 122404 (2014)