Topic:
A gapless surface state with non-trivial topological properties is shown to result solely from stacking-fault disorder at the MnBi2Te4 (MBT) surface.
Our findings provide a new explanation to the long-standing puzzle of how to reconcile contradictory surface gap measurements in various MBT samples.
![Jaron T. Krogel](/sites/default/files/styles/staff_profile_image_style/public/2024-02/1C_square.png?h=1ed3012c&itok=0qkm3mAQ)