Suppression of tunneling into multi-wall carbon nanotubes

Abstract

We have studied tunneling of electrons into multi-wall carbon nanotubes. Nanotube/electrode interfaces with low transparency as well as nanotube/nanotube junctions created with atomic force microscope manipulation have been used. The tunneling conductance goes to zero as the temperature and bias are reduced, and the functional form is consistent with a power law suppression of tunneling as a function of energy. The exponent depends upon sample geometry. The relationship between these results and theories for tunneling into ballistic and disordered metals is discussed.

5 pages, 4 figures

References in corpus (2)

• Bulk and boundary zero-bias anomaly in multi-wall carbon nanotubes
• Coulomb Blockade of Tunneling between Disordered Conductors

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