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We report on the electronic properties of turbostratic graphitic microdisks, rotationally stacked systems of graphene layers, where interlayer twisting leads to electronic decoupling resulting in charge-transport properties that retain the two dimensionality of graphene, despite the presence of a large number of layers. A key fingerprint of this reduced dimensionality is the effect of weak charge-carrier localization that we observe at low temperatures. The disks’ resistivity measured as a function of magnetic field changes its shape from parabolic at room temperature to linear at a temperature of 2.7 K indicating further this type of two-dimensional transport. Compared to Bernal stacked graphite, turbostratic graphene is mechanically much more robust, and it exhibits almost negligible variations of the electrical properties between samples. We demonstrate a reproducible resistivity of (3.52±0.11)× 10− 6 Ω m, which is a …
American Physical Society
Publication date: 
23 Feb 2017

Nils Richter, Yenny R Hernandez, Sebastian Schweitzer, June-Seo Kim, Ajit Kumar Patra, Jan Englert, Ingo Lieberwirth, Andrea Liscio, Vincenzo Palermo, Xinliang Feng, Andreas Hirsch, Klaus Müllen, Mathias Kläui

Biblio References: 
Volume: 7 Issue: 2 Pages: 024022
Physical Review Applied