1. Department of Physics, Cochin University of Science and Technology, Cochin 682022, India
2. Low temperature division, UGC-DAE Consortium for Scientific Research, Indore, India
3. Material Science and Technology Division, National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram–695019, India
4. Department of Physics, Sultan Qaboos University, Muscat PC 123, Sultanate of Oman
5. Institute of Physics, University of Augsburg, Augsburg 86135, Germany