Regensburg 2022 – wissenschaftliches Programm

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 23: Skyrmions 2 (joint session MA/KFM)

KFM 23.1: Vortrag

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

Complementary investigations of magnetic textures in the antiskyrmion compound Mn1.4PtSn with REXS and LTEMM. Winter1,2,3,4, 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. Felser11MPI 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 Mn1.4PtSn 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 Mn1.4PtSn. 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.

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