Institution: | 1.Department of Physics, College of Natural Science, Chungbuk National University, 28644, Cheongju, South Korea ;2.Department of Mechanical and Aerospace Engineering, University of California, 92093-0411, San Diego, California, USA ;3.Amirkhanov Institute of Physics, DSC of RAS, 367003, Makhachkala, Russia ;4.Department of Energy Resources Engineering, Stanford University, 94305, Stanford, CA, USA ;5.School of Natural Science, Ulsan National Institute of Science and Technology, 44919, Ulsan, South Korea ;6.Department of Physics, College of Education, Chungbuk National University, 28644, Cheongju, South Korea ; |