Fig. 1: Characterization of monatomic bismuth surface alloy. | npj Quantum Materials

Fig. 1: Characterization of monatomic bismuth surface alloy.

From: Orbital-enhanced warping effect in px,py-derived Rashba spin splitting of monatomic bismuth surface alloy

Fig. 1

a Overview of STM constant-current topography of about 0.40 ML Bi grown on Cu(111) and the scale bar is 35 nm (scan parameters: U = + 1.0 V, I = 0.4 nA, T = 4.5 K). b Zoom-in image from the BiCu2 area marked by black dashed square in a and the scale bar is 12 nm. The antiphase domain boundary and Bi vacancies are indicated by black and red arrows, respectively (scan parameters: U = + 1.0 V, I = 1.0 nA, T = 4.5 K). c Atomic resolution image of BiCu2 alloy showing \(\sqrt 3 \times \sqrt 3 R30^0\) reconstruction and corresponding structure model displayed in the inset. The scale bar is 4 nm. The red arrow marks the same single Bi vacancy from b (scan parameters: U = + 1.0 V, I = 1.0 nA, T = 4.5 K). d Atomic resolution image of Bi[2012] unit cell resolved from blue dashed square in a and the scale bar is 4 nm. The zigzag chain-like feature can be referred to atomic structure model in the inset (scan parameters: U = + 1.0 V, I = 1.0 nA, T = 4.5 K).

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