Seeing Stripes (IMAGE)

Columbia University

Seeing Stripes

Caption

Two 200 nm-wide spectroscopy images of a sample of twisted double bilayer graphene. The left depicts the triangle lattice of the moiré material, which has three-fold symmetry and can be rotated 120 degrees any direction without changing the image. The second image was taken at a different energy and can now only be rotated 180 degrees. The emergence of stripes reflects this broken rotational symmetry and indicates a nematic phase.

Credit

Carmen Rubio-Verdú

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