Affiliation: | 1.Centre for Advanced Studies in Physics (CASP), GC University, Lahore, Pakistan ;2.Department of Physics, GC University, Lahore, Pakistan ;3.College of Aeronautical Engineering (CAE), PAFAA, National University of Sciences and Technology, Risalpur, Pakistan ;4.Department of Materials Science and Engineering, University of California, Los Angeles, USA ;5.Department of Physics, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, Republic of Korea ; |