1. Hybrid Nanodevice Research Group (HNRG), Electrical Engineering, Indian Institute of Technology (IIT) Indore, Indore 453552, India
2. Department of Electrical and Computer Engineering, University of Minnesota, Minnesota, Minneapolis 55455, USA
3. Raja Ramanna Center for Advanced Technology, Indore 452013, India
4. Optical coatings Laboratory, RRCAT, Indore 452013, India and Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India