1. Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan
2. COMSATS University Islamabad (CUI), Islamabad Campus, Park Road, Chak Shahzad, Islamabad, Pakistan
3. National Centre for Physics, Shahdara Valley Road, Islamabad, Pakistan
4. Theoretical Physics Department (TPD), PINSTECH, P.O. Nilore, Islamabad, Pakistan
5. University of Management and Technology C-II, Johar Town, Lahore, Pakistan