Charge transfer empties the flat band in 4H${}_b$-TaS${}_2$ -- except at the surface

Mihir Date, Hyeonhu Bae, Alex Louat +5

The 4H\textsubscript{b} polytype of TaS${}_2$ is a natural heterostructure of H and T-type layers. Intriguing recent evidence points towards a possibly chiral superconducting ground…