Dresden 2011 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 86: Quantum Dots: Growth and Characterization
HL 86.9: Vortrag
Freitag, 18. März 2011, 12:30–12:45, FOE Anorg
Correlating different characterization methods on individual Carbon Nanotubes — •Robert Frielinghaus1,2, Karin Goß1,2, Christian Spudat1,2, Lothar Houben2,3, Matthias Müller4, Christian Thomsen4, Stefan Trellenkamp2,5, Carola Meyer1,2, and Claus M. Schneider1,2 — 1Peter-Grünberg-Institut (PGI-6), Forschungszentrum Jülich, 52425 Jülich, Germany — 2JARA Fundamentals of Future Information Technologies, Forschungszentrum Jülich, 52425 Jülich, Germany — 3Peter-Grünberg-Institut (PGI-5) und Ernst-Ruska-Centre for Microscopy and Spectroscopy with Electrons, Forschungszentrum Jülich, 52425 Jülich, Germany — 4Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany — 5Peter-Grünberg-Institut (PGI-8-PT), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
Carbon nanotubes (CNTs) can serve as model systems for molecular interactions in (quantum) transport experiments. Their properties are greatly affected by their chemical modification as, e.g., filling with fullerenes. Yet standard samples do not allow for a direct structural observation. Here we present an approach to perform transport, transmission electron microscopy (TEM) as well as optical Raman measurements all on a single CNT. Windows are etched in a Si3N4 TEM membrane on which CNTs are grown by means of chemical vapour deposition. They can then be contacted via standard electron beam lithography. The TEM measurements provide the structural information that is needed for the interpretation of the transport data. This process may readily be applied to other material systems such as nanowires.