Interwall conductance in double-walled armchair carbon nanotubes

TL;DR

This study calculates how interwall conductance in double-walled armchair carbon nanotubes varies with wall distance and position, revealing potential applications as stable nanoresistors or nanocapacitors.

Contribution

It provides a detailed analysis of interwall conductance dependence on distance and position in DWCNTs using Bardeen method, highlighting their potential as nanoelectronic components.

Findings

Conductance is temperature independent below 500 K.

Interwall conductance decreases by 6 orders of magnitude when distance doubles.

Linear current-voltage characteristic observed.

Abstract

The dependence of the interwall conductance on distance between walls and relative positions of walls are calculated at the low voltage by Bardeen method for (n,n)@(2n,2n) double-walled carbon nanotubes (DWCNTs) with n = 5, 6, ..., 10. The calculations show that interwall conductance does not depend on temperature (for T < 500 K) and current-voltage characteristic is linear. The conductance decreases by 6 orders of magnitude when the interwall distance is doubled. Thus, depending on the interwall distance, DWCNTs can be used as temperature stable nanoresistors or nanocapacitors.