1. Department of Physics, Tezpur University (Central University), Tezpur-784028, India
2. School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, United Kingdom
3. Centre of Biomedical Research, SGPGIMS Campus, Lucknow 226014, India
4. UGC-DAE Consortium for Scientific Research, Mumbai Centre, R-5 Shed, Bhabha Atomic Research Centre, Mumbai 400085, India
5. Department of Molecular Biology and Biotechnology, Tezpur University (Central University), Tezpur-784028, India
6. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
7. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore