Thickness-Induced Topological Phase Transition Investigated by Helicity Dependent Photocurrent in $\hat{I}\pm$-Sn/CdTe(110)

Tengfei Liu, Xiyu Hong, Zhe Li +10

$\hat{I}\pm$-Sn exhibits a rich topological phase diagram, yet experimental methods to tune and distinguish these phases remain limited. Here, we investigated the helicity-dependent photoc…