About the Authors
ETH Zurich, Zurich, Switzerland
Santa Fe Institute, Santa Fe, New Mexico, United States of America
Collegium Budapest - Institute for Advanced Study, Budapest, Hungary
Research Institute for Technical Physics and Materials Science, Budapest, Hungary
Faculty of Natural Sciences and Mathematics, University of Maribor, Maribor, Slovenia
The authors have declared that no competing interests exist.
Conceived and designed the experiments: DH AS MP GS. Performed the experiments: DH AS MP GS. Wrote the paper: DH AS MP GS.