Friedel Oscillations in Carbon Nanotube Quantum Dots and Superlattices

• Authors: L. Chico , H. Santos , A. Ayuela , M. Pelc , W. Jaskólski
• Languages of publication: EN

Abstracts

EN

Interface states of all-metallic carbon nanotube quantum dots and superlattices are studied within a tight-binding model. We focus on achiral systems made by connecting armchair (n,n) and zigzag (2n,0) tubes with a full ring of n pentagon-heptagon topological defects. We show that the coupling between interface states, which arise from the topological defects, reflects the existence of the Friedel oscillations in the (n,n) tube, with an unusually large decay exponent. We expect this interaction to be important for the understanding of other physical properties, such as selective dot growth, magnetic interaction through carbon tubes or optical spectroscopy of interface states.

Keywords

EN

73.22.-f; 73.90.+f

Discipline

• 73.22.-f: Electronic structure of nanoscale materials and related systems
• 73.90.+f: Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures (Restricted to new topics in section 73)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 5
• Pages: 1085-1091

Dates

published

2008-11

received

2008-06-07

Contributors

author

L. Chico

• Departamento de Física Aplicada UCLM, 45071 Toledo, Spain

author

H. Santos

• Departamento de Física Aplicada UCLM, 45071 Toledo, Spain

author

A. Ayuela

• Centro Mixto CSIC-UPV/EHU, 20080 Donostia, Spain

author

M. Pelc

• Instytut Fizyki UMK, Grudziądzka 5, 87-100 Toruń, Poland

author

W. Jaskólski

• Instytut Fizyki UMK, Grudziądzka 5, 87-100 Toruń, Poland

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Identifiers

DOI

10.12693/APhysPolA.114.1085