Figure 2
Characterization of Bi(111) film’s surface.
(a) RHEED pattern and (b) STM topography of 30 nm Bi(111) films on Bi2Te3. Insert is the height line profile along the black curve. (c) In-plane lattice constant of Bi films as a function of the thickness. The high voltage of RHEED is 30kV. For the STM image, the bias voltage is 1.42 V, the tunneling current is 162 pA.
