Curvature effects on collective excitations in dumbbell-shaped hollow nanotubes

• Published in: Physica. E, Low-dimensional systems & nanostructures Vol. 42; no. 4; pp. 1151 - 1154
• Main Authors: Shima, Hiroyuki, Yoshioka, Hideo, Onoe, Jun
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2010; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Electronic structure of nanoscale materials : clusters, nanoparticles, nanotubes, and nanocrystals; Exact sciences and technology; Fullerene polymer; Geometric effect; Physics; Tomonaga–Luttinger liquid; Geometric effect; Tomonaga–Luttinger liquid; Fullerene polymer; Effective field approximation; Luttinger liquid; Hollow shape; Dumbbell model; Nanotubes; Effective potential; Tomonaga-Luttinger liquid; Periodic variations; Curvature; Collective excitations
• ISSN: 1386-9477; 1873-1759
• DOI: 10.1016/j.physe.2009.10.030

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.