1. National Centre of Physics (NCP), Quaid-i-Azam University Campus, Shahdra Valley Road, Islamabad 44000, Pakistan
2. Theoretical Plasma Physics Group, Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan
3. Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, 96 Jiazhai Road, Hefei, Anhui 230026, People's Republic of China