About the Authors
- Lauri Jetsu
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* E-mail: lauri.jetsu@helsinki.fi
Affiliation Department of Physics, P.O. Box 64, FI-00014 University of Helsinki, Finland
- Sebastian Porceddu
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Affiliation Department of Physics, P.O. Box 64, FI-00014 University of Helsinki, Finland
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: LJ SP. Performed the experiments: LJ SP. Analyzed the data: LJ SP. Contributed reagents/materials/analysis tools: LJ SP. Wrote the paper: LJ SP.