Magnetic Properties of Non-van der Waals 2D Materials

While 2D materials are traditionally derived from bulk layered crystals
bonded by weak van der Waals (vdW) forces, the recent surprising
experimental realization of non-vdW 2D compounds obtained from
non-layered transition metal oxides [1] foreshadows a new direction in
2D systems research.
As outlined by our recent data-driven investigations [2, 3], these
materials exhibit unique magnetic properties owing to the magnetic
cations at the surface of the sheets. Despite of several ferromagnetic
candidates, even for the antiferromagnetic representatives, the surface
spin polarizations are diverse ranging from moderate to large values
modulated in addition by ferromagnetic and antiferromagnetic in-plane
coupling. At the same time, chemical tuning by surface passivation
provides a valuable handle to further control the magnetic properties
of these novel 2D compounds [4] thus rendering them an attractive
platform for fundamental and applied nanoscience.
[1] A. Puthirath Balan et al., Nat. Nanotechnol. 13, 602 (2018).
[2] R. Friedrich et al., Nano Lett. 22, 989 (2022).
[3] T. Barnowsky et al., Adv. Electron. Mater. 9, 2201112 (2023).
[4] T. Barnowsky et al., submitted, arXiv:2310.07329 (2023).