Quantum Interference and Ballistic Transmission in Nanotube Electron Waveguides
Jing Kong(Stanford University), Erhan Yenilmez(Stanford University), Thomas W. Tombler(Stanford University), Woong Kim(Stanford University), Hongjie Dai(Stanford University), R. B. Laughlin(Stanford University), Lei Liu(University of Louisville), C. S. Jayanthi(University of Louisville), Shiyu Wu(University of Louisville)
Cited by 449
Abstract
The electron transport properties of well-contacted individual single-walled carbon nanotubes are investigated in the ballistic regime. Phase coherent transport and electron interference manifest as conductance fluctuations as a function of Fermi energy. Resonance with standing waves in finite-length tubes and localized states due to imperfections are observed for various Fermi energies. Two units of quantum conductance 2G(0) = 4e(2)/h are measured for the first time, corresponding to the maximum conductance limit for ballistic transport in two channels of a nanotube.
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