1. School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300350, P. R. China
2. Computational Science Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
3. Department of Physics, Bacha Khan University, Charsadda, KP, Pakistan
4. Department of Physics, Hazara University, Mansehra, KP, Pakistan
5. Department of Physics, Abbottabad University of Science and Technology, Abbottabad, KP, Pakistan