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MA: Fachverband Magnetismus

MA 57: Posters Magnetism II

MA 57.22: Poster

Donnerstag, 19. März 2020, 15:00–18:00, P3

Temperature and angular dependence of the anisotropic magnetoresistance in epitaxial Mn5Ge3 film — •Yufang Xie^1,3, Ye Yuan², Manfred Helm^1,3, Jörg Grenzer¹, Magdalena Birowska⁴, Dominik Kriegner^3,5, Shengqiang Zhou¹, and Prucnal Slawomir¹ — ¹Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany — ²Physical Science and Engineering Division, King Abdullah University of Science and Technology, 23955-6900, Thuwal, Saudi Arabia — ³Technische Universität Dresden, 01062 Dresden, Germany — ⁴Faculty of Physics, Institute of Theoretical Physics, University of Warsaw, Pasteura 5, 02093 Warsaw, Poland — ⁵Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Str. 40, 01187 Dresden, Germany

The epitaxial ferromagnetic Mn5Ge3 films are made by ms-range diffusion of Mn into Ge (100). Temperature dependent angular magnetoresistance (AMR) measurements were performed on Mn5Ge3 films. The AMR changes strongly with temperature rising from 5K to 300K. The characteristic feature of the AMR is a twofold symmetry below 100 K and above 270K. From 100 K to 270 K, AMR shows an overall sixfold symmetry. The temperature dependent X-ray diffraction indicates there is remarkable structural deformation at 100 K, which probably results in the modification of the spin configuration from collinear to noncollinear. Considering temperature dependent magnetic properties, it is possible to conclude the transformation of spin configuration is responsible for the temperature dependent AMR.