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MA: Fachverband Magnetismus

MA 43: Skyrmions III / Non-Skyrmionic Magnetic Textures II

MA 43.4: Vortrag

Freitag, 21. März 2025, 10:15–10:30, H16

Nitrogen-vacancy scanning imaging of a room-temperature skyrmion lattice in a van der Waals ferromagnet Fe3-xGaTe2 — •Young-Gwan Choi¹, Hayden Binger¹, Luke Turnbull¹, Yejin Lee¹, Lotte Boer¹, Chenhui Zhang², Haneul Kim³, Claire Donnelly¹, Hyunsoo Yang², and Uri Vool¹ — ¹Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany — ²Department of Electrical and Computer Engineering, National University of Singapore, 117583 Singapore, Singapore — ³Department of Physics, University of Ulsan, 44610 Ulsan, Korea

We report the visualization of the magnetic stray field from a room-temperature skyrmion lattice in the van der Waals ferromagnet Fe3-xGaTe2(FGaT) by nitrogen-vacancy (NV) scanning. By employing a field-cooled process, we observed the transition from labyrinth domain structures to a stable skyrmion lattice state, demonstrating the formation of a stable skyrmion lattice phase. The experiments were conducted on FGaT flakes with an approximate thickness of 100 nm, revealing detailed insights into the stable formation of the skyrmion phase even at room temperature. These results highlight the capability of NV scanning for direct and quantitative imaging of room-temperature skyrmions, offering valuable insights into their properties and advancing the understanding of skyrmion lattices. This study provides a basis for further exploration of skyrmion-based spintronic applications.

Keywords: Neel skyrmion; skyrmion; Nitrogen vacancy center; NV scanning; Skyrmion lattice