Emergence of metallic surface states and negative differential conductance in thin $\beta$-FeSi${}_2$ films on Si(001)

Keisuke Sagisaka, Tomoko Kusawake, David Bowler +1

The electronic properties of the surface of $\beta$-FeSi${}_2$ have been debated for a long while. We studied the surface states of $\beta$-FeSi${}_2$ films grown on Si(001) substrates using s…