Regensburg 2013 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 15: Poster Session

MM 15.10: Poster

Montag, 11. März 2013, 18:00–20:00, Poster E

Charge and Spin transport in Turbostratic Graphene and Graphene Nanoribbons — •Nils Richter1, Sebastian Schweitzer2, Ajit Kumar Patra2, Yenny Hernandez3, Jakoba Heidler4, Xinliang Feng3, Petr Ostrizek1, and Mathias Kläui1,2,414Institut für Physik, Johannes Gutenberg Universität, Staudinger Weg 7, 55128 Mainz, Germany — 2FB Physik, Universität Konstanz, Universitätsstr. 10, D-78457 Konstanz, Germany — 3Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, German — 4SwissFEL, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland

Single Layer Graphene (SLG), which is a simple 2D honeycomb lattice made of carbon atoms, is still one of the most promising materials for scientific research and moreover for nanoelectronic and spintronic devices. Here we present electrical and magnetic transport in two highly interesting Graphene allotropes: Turbostratic Graphene (TG) and Graphene Nanoribbons (GNR). TG is a stack of Graphene where every layer is rotated by a certain angle. Nevertheless it retains important properties similar to SLG due to electronical decoupling. High mobilities of 105 cm2/Vs were measured in TG discs [1] and spin injection in a non-local spin valve [2] has been investigated. Measurements with atomically precise GNR [3] indicate quantum transport behaviour at low temperatures and theory predicts magnetic edge states [4].

[1] Y. Hernandez et al., (under review). [2] N. Tombros et al., Nature 448, 571 (2007). [3] Cai et al., Nature 466, 470-473 (2010). [4] O. Yazyev et al., Phys. Rev. Lett. 100, 047209 (2008)

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