1. Department of Physics, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382355 India
2. St. Thomas College of Engineering & Technology, Kolkata 700023, India
3. Department of Physics, SRM University, Amaravati, Andhra Pradesh 522240, India
4. K C Patel Centre for Sustainable Development, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar 382355 India