Scanning Tunneling Microscopy of Defect States in the Semiconductor Bi${}_2$Se${}_3$

S. Urazhdin, D. Bilc, S. H. Tessmer +3

Scanning tunneling spectroscopy images of Bi${}_2$Se${}_3$ doped with excess Bi reveal electronic defect states with a striking shape resembling clover leaves. With a simple tight-bind…