1. Tata Institute of Fundamental Research, Department of Condensed Matter Physics and Material Science, Homi Bhabha Road, Mumbai 400 005, IndiabIndian Institute of Technology Bombay, Department of Electrical Engineering and Centre for Excellence in Nanoelect
2. Indian Institute of Technology Bombay, Department of Electrical Engineering and Centre for Excellence in Nanoelectronics, Mumbai 400076, India
3. Tata Institute of Fundamental Research, Department of Condensed Matter Physics and Material Science, Homi Bhabha Road, Mumbai 400 005, India