Recent Progress in AB/BA Twisted WSe₂

Two-dimensional van der Waals materials have proven to be a diverse playground for hosting a rich variety of novel states of matter, allowing researchers to use stacking and twist-angle as additional tuning knobs, beyond the usual carrier density and electric displacement field, to explore a more expansive phase diagram. Transition metal dichalcogenides in particular have emerged as an exciting material platform, due to their large spin-orbit coupling which leads to spin-valley locking. Previous theoretical work has predicted that AB/BA stacked twisted double bilayer WSe₂ has a tunable honeycomb lattice structure, with the potential to host antiferromagnetic, spin density wave, and sublattice polarized ordered states [1]. Here we report on progress towards characterization of AB/BA twisted double bilayer tungsten diselenide devices by magnetotransport and electronic compressibility measurements.

[1] H. Pan et al. Phys. Rev. Res. 5 043173 (2023).