Scanning Tunneling Microscope Tip-Induced Formation of Bi Bilayers on Bi${}_2$Te${}_3$

Duy Nguyen, Jay A. Gupta

We report the formation of Bi(111) bilayer (BL) islands and crater structures on Bi${}_2$Te${}_3$(111) surfaces induced by voltage pulses from an STM tip. Pulses above a threshold volt…