Quantum interference and ballistic transmission in nanotube electron waveguides |
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| Authors: | Kong J Yenilmez E Tombler T W Kim W Dai H Laughlin R B Liu L Jayanthi C S Wu S Y |
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| Institution: | Department of Chemistry and Laboratory for Advanced Materials, Stanford University, Stanford, California 94305, USA. |
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| 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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