Dresden 2014 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 80: Transport: Carbon nanotubes (organized by TT)

HL 80.4: Vortrag

Mittwoch, 2. April 2014, 17:15–17:30, HSZ 304

A carbon nanotube in the strong coupling regime: Fabry-Perot interference in a ballistic electron wave guide. — •Alois Dirnaichner1, Miriam del Valle2, Andreas Hüttel1, Christoph Strunk1, and Milena Grifoni21Institute of Experimental and Applied Physics Regensburg — 2Institute for Theoretical Physics Regensburg

We present low-temperature measurements of transport through a ultra clean suspended carbon nanotube with strong coupling to the leads. The sample exhibits strikingly high conductance and little reflection at the interfaces between tube and metal, as can be seen from pronounced Fabry-Perot interference patterns in the conductance. The measurements are compared to theoretical results obtained from a scattering matrix calculation where the reflection at the contacts is treated as a perturbation. Furthermore, we discuss the evolution of the patterns in a magnetic field perpendicular to the nanotube axis.

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