Universal transition between inductive and capacitive admittance of metallic single-walled carbon nanotubes

Takahiro Yamamoto, Kenji Sasaoka, and Satoshi Watanabe
Phys. Rev. B 82, 205404 – Published 4 November 2010

Abstract

We theoretically investigate the subterahertz ac response of submicron metallic single-walled carbon nanotube connected to electrodes using the nonequilibrium Green’s-function method. We find that the ac response shows remarkable chirality dependence in the presence of the contact resistance at the nanotube/electrode interfaces: the susceptance is classified into three categories with respect to the tube length for armchair nanotubes while it is independent of the tube length for zigzag nanotubes. Moreover, the susceptance changes from inductive to capacitive as the contact resistance increases, and the inductive-capacitive transition occurs universally at the quantum resistance, h/e2, irrespective of tube chirality and length. We give an account of the universal transition using a simple resonant tunneling model.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 3 April 2010

DOI:https://doi.org/10.1103/PhysRevB.82.205404

©2010 American Physical Society

Authors & Affiliations

Takahiro Yamamoto1, Kenji Sasaoka2, and Satoshi Watanabe1

  • 1Department of Materials Engineering, The University of Tokyo, Tokyo 113-8656, Japan
  • 2Center for Computational Science, Tsukuba University, Tsukuba, Ibaraki 305-8577, Japan

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 82, Iss. 20 — 15 November 2010

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×