1. Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala SE-75120, Sweden
2. Department of Metallurgy Engineering and Materials Science, Indian Institute of Technology (IIT) Indore, Indore, Madhya Pradesh 453552, India
3. Department of Chemistry, Indian Institute of Technology (IIT) Indore, Indore, Madhya Pradesh 453552, India
4. Applied Materials Physics, Department of Materials Science and Engineering, Royal Institute of Technology (KTH), SE-10044 Stockholm, Sweden