Fig. 1: Topographies and atomic structures of antimonene/Bi(111) moiré superlattices. | Communications Materials

Fig. 1: Topographies and atomic structures of antimonene/Bi(111) moiré superlattices.

From: Moiré superlattices of antimonene on a Bi(111) substrate with van Hove singularity and Rashba-type spin polarization

Fig. 1

a STM topographic image of 1BL and 2BL Sb grown on a Bi(111) film (Sample bias voltage: Vs = −1.0 V, Tunnelling current: It = 100 pA). Regions I and III correspond to 1BL Sb while Region II to 2BL Sb. The inset shows a FFT transform of a surface area belonging to Region I (scale bar: 0.3 nm−1). b Height profile along the dotted line in a. c, d Atomic resolution images of 1BL Sb c and 2BL Sb d on a Bi(111) surface. (Vs = −50 mV, It = 500 pA c, Vs = −50 mV, It = 300 pA d). The dashed parallelograms indicate the unit cells of the moiré superlattices. e The top and side views of the AA, AB and AC stacking sequences (blue spheres: Sb, red spheres: Bi). The vertical dashed lines shows the alignment of the Sb and Bi atoms.

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