Abstract
We report on the low-temperature electrical transport measurements of individual single-wall carbon nanotubes (SWNTs), and provide evidence of the single and multi-quantum dot formations in the measured Coulomb blockade characteristics. The multi-quantum dot formation is supported by a strong temperature dependence of the number of Coulomb blockade oscillation peaks, the so-called “stochastic Coulomb blockade”. Experimental observations are discussed by considering a possible barrier formation due to damage or defects as well as deposited-metal contacts.
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