About the Authors

Tin Yau Pang

Affiliations Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York, United States of America, Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York, United States of America

Sergei Maslov

maslov@bnl.gov

Affiliation Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SM. Performed the experiments: TYP. Analyzed the data: TYP SM. Wrote the paper: TYP SM. Derived mathematical solutions: SM.