Illustration from Scientific Research

Sketch of the lattice geometry in the x – y plane for Δ V = 0 (left) and Δ V < 0 (right). The grey shaded squares denote the corresponding Wigner–Seitz unit cells. {A} and {B} denote two classes of potential wells with tunable relative well depth. At the lower edge, sections along the dashed lines in the upper panels of d are shown.

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