About the Authors

Niklas Hübel

Affiliation Department of Theoretical Physics, Technische Universität Berlin, Berlin, Germany

Eckehard Schöll

Affiliation Department of Theoretical Physics, Technische Universität Berlin, Berlin, Germany

Markus A. Dahlem

dahlem@physik.hu-berlin.de

Affiliation Department of Physics, Humboldt Universität zu Berlin, Berlin, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MAD NH. Performed the experiments: NH MAD. Analyzed the data: NH MAD ES. Contributed reagents/materials/analysis tools: NH MAD. Wrote the paper: NH MAD ES.