| Affiliation: | 1. ICFO – Institut de Ciènces Fotòniques, 08860 Castelldefels (Barcelona), Spain;2. Department of Physics and Astronomy, York University, 4700 Keele Street, Toronto, Ontario, M3J 1P3, Canada;1. Department of Physics, University of Rajshahi, Rajshahi 6205, Bangladesh;2. Khwaja Yunus Ali University, Enayetpur, Chowhali, Sirajgonj 6751, Bangladesh;3. Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, Old Faure Road, 7129 Somerset West, South Africa;4. Department of Physics, Florida A & M University, Tallahassee, FL 32307, USA;1. Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warszawa, Poland;2. Department of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588-0299, USA;1. School of Physics, M013, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia;2. Physics department, Faculty of Science, King Abdulaziz University, P O Box 80203, Jeddah, Saudi Arabia |
