SKM 2021 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 15: Posters Magnetism IV

MA 15.27: Poster

Donnerstag, 30. September 2021, 13:30–16:30, P

Magnetisation dynamics and transport properties of epitaxial Co2MnSi Heusler thin films — Claudia de Melo^1,2, •Anna M. Friedel^1,3, Charles Guillemard^1,4, Victor Palin^1,4, Philipp Pirro³, Sébastien Petit-Watelot¹, and Stéphane Andrieu¹ — ¹Institut Jean Lamour, UMR CNRS 7198, Université de Lorraine, Nancy, France — ²Chair in Photonics, LMOPS EA 4423 Laboratory, CentraleSupélec, Université de Lorraine, Metz, France — ³Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern, Kaiserslautern, Germany — ⁴Synchrotron SOLEIL-CNRS, L’Orme des Merisiers, Gif-sur-Yvette, France

Co2Mn-based Heusler compounds form a family of promising candidates for spintronic and magnonic applications combining desirable properties such as a high saturation magnetisation, low Gilbert damping and high Curie temperatures. Epitaxial half-metallic Co2MnSi thin films are of particular interest since they have been shown to exhibit a 100% spin polarisation at the Fermi level and an associated ultralow Gilbert damping in the 10^-4 range [1]. Yet, downscaling towards ultrathin films or microstructures is a critical necessity for applications known to impact the properties of magnetic materials. In this contribution, we report on the magnetisation dynamics and transport properties of epitaxially grown Co2MnSi thin films [2] with thicknesses in the range of 4-44 nm, where ultralow Gilbert damping was maintained down to a film thickness of 8 nm.

[1] C. Guillemard, et al., Phys. Rev. Applied 11, 064009 (2019)

[2] C. Guillemard, et al., J. Appl. Phys. 128, 241102 (2020)