High-field electron transport in multi-walled carbon nanotubes (MWNTs) is studied employing a mechanically controllable break junction (MCBJ) technique. Bridging of MWNTs over Au electrodes is accomplished by repeatedly breaking Au contacts in a nanotube-dispersed solution. Observed conductance versus bias voltage (G–V) characteristics show that the conductance of MWNTs linearly increases with the bias up to 3 V. Also, the important role of the nanotube/electrode contact resistance on the electron transport through MWNTs is pointed out from measurements of G–V characteristics at various electrode distances.
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Tsutsui et al. (2005) studied this question.
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