Fig. 4: In situ electric field-driven α-In2Se3 to β-In2Se3 phase transitions. | Nature Communications

Fig. 4: In situ electric field-driven α-In2Se3 to β-In2Se3 phase transitions.

From: Stacking selected polarization switching and phase transition in vdW ferroelectric α-In2Se3 junction devices

Fig. 4

a, d HAADF-STEM images of the α/β In2Se3 interfaces in the process of α to β phase transformation in 2H (a) and 3R (d) stacking, respectively. b, e Schematics of interlayer phase transition in 2H In2Se3 (b) and intralayer phase transition in 3R In2Se3 (e). c, f Atomic models of α/β In2Se3 interfaces in 2H and 3R In2Se3 based on the STEM images in (a) and (d), respectively. g, i Atomic models of two pathways (Path-O and Path-I) in the phase transition process of 2H and 3R, respectively. h Energy difference between MS1-O-2H/MS1-I-2H and 2H α-In2Se3 under various external fields. j Energy difference between MS1-O-3R/MS1-I-3R and 3R α-In2Se3 under varying external fields.

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