Regensburg 2022 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 27: Skyrmions 2 (joint session MA/KFM)

MA 27.1: Vortrag

Donnerstag, 8. September 2022, 09:30–09:45, H37

Complementary investigations of magnetic textures in the antiskyrmion compound Mn_1.4PtSn with REXS and LTEM — M. Winter^1,2,3,4, M. Rahn⁴, D. Wolf³, S. Schneider², M. Valvidares⁵, •C. Shekar¹, P. Vir¹, B. Achinuq⁶, H. Popescu⁷, N. Jaouen⁷, G. Van der Laan⁸, T. Hesjedal⁶, B. Rellinghaus², and C. Felser¹ — ¹MPI CPfS, Dresden, Germany — ²DCN, TU Dresden, Germany — ³IFW Dresden, Germany — ⁴IFMP, TU Dresden, Germany — ⁵ALBA Synchrotron, Barcelona, Spain — ⁶Clarendon Laboratory, University of Oxford, UK — ⁷Synchrotron SOLEIL, Saint-Aubin, France — ⁸Diamond Light Source, UK

The Heusler compound Mn_1.4PtSn is known to host multiple non trivial magnetic textures like antiskyrmions (aSks). It’s phase diagram depends not only on temperature and sample shape, but also on strength and orientation of an external magnetic field as well as on the history of its application. In order to better understand the formation of aSks, we have conducted complementary experiments of resonant elastic x-ray scattering (REXS) and Lorentz transmission electron microscopy (LTEM) on an identical lamella of Mn_1.4PtSn. Our complementary approach allows for the first time to directly relate the REXS patterns to the underlying magnetic phase as determined from LTEM. Along this approach, LTEM has proven an ideal pre-characterization tool to navigate the high-dimensional parameter space and subsequently take advantage of the better control of magnetic field directions, temperature as well as of energy resolved measurements as provided by REXS. Part of this work is gratefully supported by DFG within SPP 2137.