JongHoon Jung 1, TaeKwon Lee 1, JaeWoong Kim 1, ChangWon Ahn 2, Seung-Hyun Kim 3
1 Department of Physics, Inha University, Incheon, Korea, Republic of (South), 2 Department of Physics, University of Ulsan, Ulsan, Korea, Republic of (South), 3 School of Engineering, Brown University, Providence, United States