1. Department of Physics, Indian Institute of Technology Bhilai, Bhilai, Chhattisgarh 491002, India
2. Materials and Device Laboratory, Indian Institute of Technology Indore, Simrol, Indore 453552, India
3. Department of Physics and Nanotechnology, College of Engineering and Technology, SRM Institute of Science and Technology, Chennai, 603203 Tamil Nadu, India
4. Centre for Advanced Electronics, Indian Institute of Technology Indore, Simrol, Indore 453552, India
5. Department of Materials Science and Metallurgical Engineering, Indian Institute of Technology Bhilai, Bhilai, Chhattisgarh 491002, India