Extended Data Fig. 5: Domain wall pinning at the bulk pinning sites. | Nature Materials

Extended Data Fig. 5: Domain wall pinning at the bulk pinning sites.

From: Operando electron microscopy investigation of polar domain dynamics in twisted van der Waals homobilayers

Extended Data Fig. 5

(a) Snapshots of TEM DF images obtained during the electric field sweep. The red arrow indicates a region where the domain wall pinning was observed. Magnified (b) ADF and (c) BF STEM images taken in the region where the domain wall pinning was confirmed in (a). The red arrow indicates the curved region in the domain wall caused by the pinning observed in (a). The green arrow indicates the domain wall that extends from the region indicated with the red arrow. The blue arrow indicates the linear feature where the WSe2 layer is locally strained. The insets show the lower magnification images with the magnified region indicated with the purple boxes. TEM DF images taken with Bragg peaks from WSe2 (d) and h-BN (e) layers. (f) SAED pattern obtained from the specimen that exhibits the Bragg peaks originating from WSe2, h-BN, and graphite layers.

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