Fig. 2: Surface morphology of BaMnSb2 showing two terminations: T1 (a–c) and T2 (d-f).
From: Exploration of two surfaces observed in Weyl semimetal BaMnSb2
a, d Large area STM images of T1 and T2. 2D-FFTs are shown in the insets with integer spots indicated by black circles, 2 × 1 spots in red circles. The scale bars represent 10 nm. b, e Atomically resolved images from T1 and T2. Two types of defects are circled in red and green circles. Black arrows in (b) point to moving defects generated by tip disturbance. Line profiles along the blue and green lines are shown in (g and h), A and B in (h) mark the positions of the two types of defects along the green line, respectively. A yellow line in (d) shows the reconstruction domain boundary. The scale bars represent 3 nm. c, f Defect maps of T1 and T2 created by removing 2 × 1 reconstructions. The scale bars represent 3 nm. Scan conditions: (a), −1 V, 100 pA, (b), −1 V, 100 pA, (d), −1.5 V, 30 pA, and (e), −0.6 V, 100 pA.
