1. Department of Physics, School of Natural Sciences, Shiv Nadar Institution of Eminence, NH 91, Tehsil Dadri, Uttar Pradesh-201314, India
2. Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India
3. Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India