Bulletin of the American Physical Society
APS April Meeting 2011
Volume 56, Number 4
Saturday–Tuesday, April 30–May 3 2011; Anaheim, California
Session T13: Pushing the Boundariesof Quantum Mechanics and Gravity
3:30 PM–5:30 PM,
Monday, May 2, 2011
Room: Royal EF
Sponsoring Unit: GPMFC
Chair: Blayne Heckel, University of Washington
Abstract ID: BAPS.2011.APR.T13.9
Abstract: T13.00009 : Electrical conductance between multi-walled carbon nanotube and Cu*
5:06 PM–5:18 PM
Preview Abstract Abstract
(Rockwell Collins Inc.)
Vertical MWCNT interconnects have already been investigated for vias, or even for through-wafer 3D interconnects. Several studies have been done to understand the electrical conductance of MWCNT itself. The electrical conductance at a junction between MWCNT and metals has not been studied yet. Here we reported the intershell interaction effect on the electrical conductance at the Cu/MWCNT/Cu junctions by quantum mechanics calculations. Both end- and side-contacts between MWCNT and Cu electrodes were studied. In the end-contact junction, each individual CNT in the MWCNT acts as if it is a single wave CNT. The total conductance is almost the sum of the contributions from each individual nanotube. However, in the side-contact junction, the conductance between the outermost CNT and Cu electrode is dominant, whereas the intershell interaction leads to a reduction of the total electrical conductance. This is attributed to the enhanced localization of density of states in the vicinity of Fermi level by inner tube.
*The authors acknowledge the financial support from Rockwell Collins Inc.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.APR.T13.9
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