Fig. 1: Surface characterization of Fe5GeTe2.
From: Large-scale epitaxy of two-dimensional van der Waals room-temperature ferromagnet Fe5GeTe2

a RHEED patterns of the surface before and after the deposition of a 12 nm-thick film of Fe5GeTe2 along the [110] and [210] azimuths. b RHEED intensity oscillations of the (010) streak. The solid line is a moving average of the raw scatter data. Monolayer number identified on each oscilation. c Atomic force microscopy image of a 12 nm-thick film; scale bar 100 nm. Inset: Height profile showing resolved monolayer steps (1 ML ~ 0.977 nm).