About the Authors

Oliver Richters

Affiliation Institut für Festkörperphysik, Technische Universität Darmstadt, Darmstadt, Germany

Tiago P. Peixoto

tiago@fkp.tu-darmstadt.de

Affiliation Institut für Festkörperphysik, Technische Universität Darmstadt, Darmstadt, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: OR TPP. Wrote the paper: TP.