Fig. 1: Surface preparation of the vicinal SmB6(001) surface. | Nature Communications

Fig. 1: Surface preparation of the vicinal SmB6(001) surface.

From: Breakdown of bulk-projected isotropy in surface electronic states of topological Kondo insulator SmB6(001)

Fig. 1

a Crystal structure of SmB6. b LEED patterns of the cleaned SmB6(001) surface taken at 100 K. The distortions in the patterns are due to the flat microchannel plate in the LEED electron optics. Two-headed arrows indicate the lines along which the profiles in (c) were taken. c LEED line profiles taken from the pattern shown in (b). d Angle-integrated photoelectron spectra taken at 13 K. 6F and 6H are the Sm2+ 4f5 final states after photoexcitation. e A surface atomic structure of SmB6(001) without any surface superstructure. f The same as (e) but with hypothetical p(2 × 2) surface reconstruction. Arrows guide the displacements of Sm and B6 near the surface.

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