About the Authors

Hyun Gyu Lee

Roles Formal analysis, Investigation, Methodology, Software, Visualization, Writing – original draft

Affiliation Department of Physics, Korea University, Seoul, Korea

Kyoung J. Lee

Roles Conceptualization, Data curation, Funding acquisition, Project administration, Supervision, Validation, Writing – original draft, Writing – review & editing

kyoung@korea.ac.kr

Affiliation Department of Physics, Korea University, Seoul, Korea

Competing Interests

The authors have declared that no competing interests exist.