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The structures of the Möbius strips formed by graphene nanoribbons. The Arabic numerals in the square brackets indicate the width .
The inverse radius of the sphere determined by a carbon atom and its three nearest neighbors for the (a). The bond lengths (in unit of angstrom) of three typical areas are shown in (b). Sign change of curvature at the vertex of planar triangle is shown (c).
The DED as a function of the width of the Möbius strips formed by graphene nanoribbons. The TMMs of Möbius strips are shown in the inset.
The AMMs of edge carbons are shown in (a). The spin polarized density of states and spin density for Möbius molecule formed by graphene nanoribbons (with ) are shown in (b) and (c), respectively.
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