Engineering antiferromagnetic domains in an atomically thin 2D magnet

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 and magnetic textures in ultra-thin CrSBr flakes via the lateral interplay of spin configurations of the magnetic moments within individual layers of CrSBr.

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)