Antiskyrmions and their electrical footprint in crystalline mesoscale structures of Mn1.4PtSn

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Moritz Winter - , Center for Advancing Electronics Dresden (cfaed), Faculty of Physics, Helmholtz-Zentrum Dresden-Rossendorf, Max Planck Institute for Chemical Physics of Solids, Dresden University of Technology (Author)
  • Francisco J.T. Goncalves - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • Ivan Soldatov - , Leibniz Institute for Solid State and Materials Research Dresden (Author)
  • Yangkun He - , Max Planck Institute for Chemical Physics of Solids (Author)
  • Belén E.Zúñiga Céspedes - , Institute of Applied Physics, Chair of Experimental Physics / Photophysics, Max Planck Institute for Chemical Physics of Solids, Dresden University of Technology (Author)
  • Peter Milde - , Institute of Applied Physics, Chair of Experimental Physics / Photophysics, Dresden University of Technology (Author)
  • Kilian Lenz - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • Sandra Hamann - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • Marc Uhlarz - , Helmholtz-Zentrum Dresden-Rossendorf (Author)
  • Praveen Vir - , Max Planck Institute for Chemical Physics of Solids (Author)
  • Markus König - , Max Planck Institute for Chemical Physics of Solids (Author)
  • Philip J.W. Moll - , Max Planck Institute for Chemical Physics of Solids, Swiss Federal Institute of Technology Lausanne (EPFL) (Author)
  • Richard Schlitz - , Chair of Solid State Physics, Dresden University of Technology (Author)
  • Sebastian T.B. Goennenwein - , Chair of Solid State Physics, Dresden University of Technology (Author)
  • Lukas M. Eng - , Institute of Applied Physics, Chair of Experimental Physics / Photophysics, Dresden University of Technology, Würzburg-Dresden Cluster of Excellence ct.qmat (Author)
  • Rudolf Schäfer - , Leibniz Institute for Solid State and Materials Research Dresden, Dresden University of Technology (Author)
  • Joachim Wosnitza - , Chair of Physics of High Magnetic Fields, Helmholtz-Zentrum Dresden-Rossendorf, Dresden University of Technology, Würzburg-Dresden Cluster of Excellence ct.qmat (Author)
  • Claudia Felser - , Max Planck Institute for Chemical Physics of Solids, Würzburg-Dresden Cluster of Excellence ct.qmat (Author)
  • Jacob Gayles - , Max Planck Institute for Chemical Physics of Solids, University of South Florida (Author)
  • Toni Helm - , Helmholtz-Zentrum Dresden-Rossendorf, Max Planck Institute for Chemical Physics of Solids (Author)

Abstract

Skyrmionic materials hold the potential for future information technologies, such as racetrack memories. Key to that advancement are systems that exhibit high tunability and scalability, with stored information being easy to read and write by means of all-electrical techniques. Topological magnetic excitations such as skyrmions and antiskyrmions, give rise to a characteristic topological Hall effect. However, the electrical detection of antiskyrmions, in both thin films and bulk samples has been challenging to date. Here, we apply magneto-optical microscopy combined with electrical transport to explore the antiskyrmion phase as it emerges in crystalline mesoscale structures of the Heusler magnet Mn1.4PtSn. We reveal the Hall signature of antiskyrmions in line with our theoretical model, comprising anomalous and topological components. We examine its dependence on the vertical device thickness, field orientation, and temperature. Our atomistic simulations and experimental anisotropy studies demonstrate the link between antiskyrmions and a complex magnetism that consists of competing ferromagnetic, antiferromagnetic, and chiral exchange interactions, not captured by micromagnetic simulations.

Details

Original languageEnglish
Article number102
JournalCommunications Materials
Volume3
Issue number1
Publication statusPublished - Dec 2022
Peer-reviewedYes

External IDs

ORCID /0000-0002-2484-4158/work/142257548

Keywords