1. IBM Semiconductor Research and Development Center, Manyata Embassy
Business Park, Nagawara, Bangalore 560 045, India
2. Department of Condensed
Matter Physics and Materials Science, Tata Institute of Fundamental Research, 1 Homi Bhabha Road, Mumbai 400005, India
3. Department of Electrical
Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India