Dresden 2009 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 9: Poster 1

HL 9.5: Poster

Montag, 23. März 2009, 14:30–17:00, P2

Electron diffraction on carbon nanotubes (CNTs) — •Christian Huber, Dominik Preusche, David Kalok, Christoph Strunk, and Josef Zweck — Institut für Experimentelle und Angewandte Physik, Universität Regensburg, Universitätsstraße 31, 93040 Regensburg, Germany

Depending on their specific structure, which can be described by the chiral indices, single walled carbon nanotubes (SWNT) may be either metallic or semiconducting materials. For the interpretation of measurements on spin polarized electron transport in SWNTs, contacted between magnetic leads, it is of importance to know the structure and hence the conductive properties as exactly as possible. Therefore, electron nano diffraction in a transmission electron microscope is performed on SWNTs. From these diffraction patterns, supported by high resolution images and simulations, it is possible to derive the chiral indices needed.