1. Department of Physics, University of Mumbai, Vidyanagari, Santacruz (E), Mumbai 400098, India
2. Department of Physics and Electronics, Christ University, Bengaluru 560029, India
3. Advanced Materials Department, Jožef Stefan Institute, Ljubljana 1000, Slovenia
4. Physics Department, Faculty of Science, The M.S. University of Baroda, Vadodara 390002, India