Towards superlattices: Lateral bipolar multibarriers in graphene

URN to cite this document:: urn:nbn:de:bvb:355-epub-296149
DOI to cite this document:: 10.5283/epub.29614

Drienovsky, Martin ; Schrettenbrunner, Franz-Xaver ; Sandner, Andreas ; Weiss, Dieter ; Eroms, Jonathan ; Liu, Ming-Hao ; Tkatschenko, Fedor ; Richter, Klaus

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Date of publication of this fulltext: 20 Mar 2014 10:42

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Abstract

We report on transport properties of monolayer graphene with a laterally modulated potential profile, employing striped top gate electrodes with spacings of 100 to 200 nm. Tuning of top and back gate voltages gives rise to local charge carrier density disparities, enabling the investigation of transport properties either in the unipolar (nn′) or the bipolar (np′) regime. In the latter, pronounced ...