Role of magnetic exchange interactions in chiral-type Hall effects of epitaxial Mn.sub.x./sub.PtSn films

0549328 - FZÚ 2022 RIV US eng J - Journal Article
Swekis, P. - Gayles, J. - Kriegner, Dominik - Fecher, G.H. - Sun, Y. - Goennenwein, S.T.B. - Felser, C. - Markou, A.
Role of magnetic exchange interactions in chiral-type Hall effects of epitaxial Mn_xPtSn films.
ACS Applied Electronic Materials. Roč. 3, č. 3 (2021), s. 1323-1333. E-ISSN 2637-6113
Institutional support: RVO:68378271
Keywords : topological Hall effect * anomalous Hall effect * Heusler compounds * thin films * noncoplanar spin textures * magnetic exchange interactions
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 4.494, year: 2021
Method of publishing: Open access

We report the relation of the magnetic exchange interactions to the thickness and Mn concentration of MnxPtSn thin films, grown by magnetron cosputtering. The competition of the magnetic exchange interactions determines the finite temperature magnetic texture and thereby the chiral-type Hall effects in external magnetic fields. We investigate the magnetic and transport properties as a function of magnetic field and temperature. We focus on the anomalous and chiral-type Hall effects and the behaviour of the dc magnetization in relation to chiral spin textures. We further determine the stable crystal phase for a relative Mn concentration between 1.5 and 1.85 in the I4̅2d structure. We observe a spin-reorientation transition in all compounds studied, originating from the competition of exchange interactions on different Mn sublattices.
Permanent Link: http://hdl.handle.net/11104/0325345