1. Multifunctional Materials Laboratory, Department of Physics, Indian Institute of Technology Madras, Chennai 600 036, India
2. Condensed Matter Theory and Computational Lab, Department of Physics, Indian Institute of Technology Madras, Chennai 600 036, India
3. Advanced Functional Materials Lab, Dr. S. S. Bhatnagar University Institute of Chemical Engineering & Technology, Punjab University, Chandigarh 160014, India
4. Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 02792, Korea