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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology

Monday, 26 June 2006
(at 16:15 in room H 34)
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Transport properties of carbon nanotubes

Reinhold Egger

Institut für Theoretische Physik IV

The electronic properties of carbon nanotubes are very rich. Over the past few years they have allowed to study many nanoscale transport properties in a single material class, e.g., superconductivity, Kondo effect, Luttinger liquid behavior, Altshuler Aronov anomalies, and spin transport. In this talk, after a broad introduction into the relevant concepts and results, two exemplary topics will be presented:
(1) The interplay of disorder and electron-electron interactions can be described by field theory. Results for the crossover from the Luttinger liquid into the diffusive Altshuler-Aronov-dominated phase (as the disorder is increased) will be given, using the conductivity and the tunneling density of states as concrete examples.
(2) The linear conductance is even in a magnetic field B because of the fundamental Onsager symmetry. However, there are nonlinear terms in the I(U) characteristics that are linear in B and even in U. Such terms have attracted much attention recently, as they give direct clues about interactions and the chirality (handedness) of the medium. I discuss this question in the context of chiral nanotubes.

slides (pdf)

Within the Physikalisches Kolloquium

last modified: 2021.05.05 Wed
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