1. Department of Physics, School of Basic and Applied Sciences, Central University of Tamil Nadu, Neelakudi, Thiruvarur 610005, Tamil Nadu, India
2. Department of Physics (MMV), Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
3. Institute of Physics, Academia Sinica, Taipei 10617, Taiwan
4. Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
5. Department of Physics, Pondicherry University, R. Venkataraman Nagar, Kalapet, Pondicherry 605014, India