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Curvature effects on collective excitations in dumbbell-shaped hollow nanotubes

We investigate surface-curvature induced alteration in the Tomonaga-Luttinger liquid (TLL) states of a one-dimensional (1D) deformed hollow nanotube with a dumbbell-shape. Periodic variation of the surface curvature along the axial direction is found to enhance the TLL exponent significantly, which is attributed to an effective potential field that acts low-energy electrons moving on the curved surface. The present results accounts for the experimental observation of the TLL properties of 1D metallic peanut-shaped fullerene polymers whose enveloping surface is assumed to be a dumbbell-shaped hollow tube.

preprint2009arXivOpen access
Hiroyuki ShimaHideo YoshiokaJun Onoe
cond-mat.mes-hallcond-mat.mtrl-sci
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Hiroyuki ShimaHideo YoshiokaJun Onoe

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