1. School of Materials Science and Engineering, Computational Centre for Molecular Science, Institute of New Energy Material Chemistry, Nankai University, Tianjin 300350, P. R. China
2. School of Physics, Nankai University, Tianjin 300071, P. R. China
3. Department of Physics, Bacha Khan University, Charsadda, KP, Pakistan
4. Department of Physics, Abbottabad University of Science & Technology, Havelian, Abbottabad, KP, Pakistan
5. Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia