Märta Tschudin
The 2D van der Waals magnet CrSBr has attracted widespread interest in the scientific community as an antiferromagnetic semiconductor that remains stable under ambient conditions [1, 2].
We investigate the magnetic properties and spin textures of atomically thin CrSBr flakes at the nanoscale using single spin Nitrogen-Vacancy (NV) magnetometry [3].With our sensing technique we are able to demonstrate the controlled creation of antiferromagnetic (AFM) domain walls in bilayer CrSBr. Notably, we are able to engineer domain walls in ultra-thin CrSBr flakes via the lateral interplay of spin configurations of the magnetic moments within individual layers of CrSBr, a method we term lateral exchange bias. The discovery of AFM domains in atomically thin CrSBr is a key advancement for both fundamental physics and potential applications in spintronics.
[1] E. Telford et al.: Adv. Mater. 32, 2003240 (2020)
[2] K. Lee et al.: Nano Lett. 21, 3511 (2021)
[3] M. A. Tschudin et al.: Nat. Commun. 15, 1 (2024)