Regensburg 2016 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 24: Carbon-based Nanostructures
HL 24.6: Vortrag
Dienstag, 8. März 2016, 11:15–11:30, H14
States of antiferromagnetic molecules detected with a carbon nanotube quantum dot — •Christian Lurz1, Michael Schnee1, Robert Frielinghaus1, Claire Besson1,2,3, Paul Kögerler1,3, Claus M. Schneider1,4, and Carola Meyer1,5 — 1Peter Grünberg Institut, Forschungszentrum Jülich, 52425 Jülich, Germany — 2Department of Chemistry, The George Washington University, Washington, DC 20052, United States — 3Institut für Anorganische Chemie, RWTH Aachen, 52074 Aachen, Germany — 4Fakultät für Physik, Universität Duisburg-Essen, 47057 Duisburg, Germany — 5Department of Physics, Universität Osnabrück, 49069 Osnabrück, Germany
Some of the most outstanding properties of carbon nanotubes (CNTs) are displayed in their sensitiveness towards changes in the environment and their spin-dependent conductivity. Thus, they are ideal devices to investigate the states of antiferromagnetic molecules via electronic transport experiments on functionalized CNTs. In this work, we present experimental data on quantum transport through CNTs covalently functionalized with antiferromagnetic tetramanganese coordination complexes. The experiments reveal a random telegraph signal (RTS), which is presumably caused by interactions between electron spin and the antiferromagnetic spin system. Furthermore, the statistics of the RTS indicate the relevant time and energy scales for transitions in this regime.