Structural Deformation and Intertube Conductance of Crossed Carbon Nanotube Junctions

Young-Gui Yoon, Mario S. C. Mazzoni, Hyoung Joon Choi, Jisoon Ihm, and Steven G. Louie
Phys. Rev. Lett. 86, 688 – Published 22 January 2001
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Abstract

We present a first-principles study of the structure and quantum electronic conductance of junctions consisting of two crossed (5,5) single-walled carbon nanotubes. The structures are determined by constrained minimization of total energy at a given force between the two tubes, simulating the effects of substrate-tube attraction or an applied force. We find that the intertube contact distance is very sensitive to the applied force in the range of 0–10 nN. The intertube conductance is sizable for realistic deformation expected from substrate interaction. The results explain the recent transport data on crossed nanotubes and show that these systems may be potentially useful as electromechanical devices.

  • Received 21 August 2000

DOI:https://doi.org/10.1103/PhysRevLett.86.688

©2001 American Physical Society

Authors & Affiliations

Young-Gui Yoon1,2, Mario S. C. Mazzoni1,2, Hyoung Joon Choi1,2, Jisoon Ihm3, and Steven G. Louie1,2

  • 1Department of Physics, University of California at Berkeley, Berkeley, California 94720
  • 2and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
  • 3Department of Physics, Seoul National University, Seoul 151-742, Korea

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Vol. 86, Iss. 4 — 22 January 2001

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