1. Physics department, University of Sidi-Bel-Abbes, Sidi-Bel-Abbes, Algeria
2. Laboratoire de Physique Quantique de la Matière et de Modélisation Mathématique (LPQ3M), Université de Mascara, Mascara, Alegria
3. Department of Electrical Engineering, University of Ibn Khaldoun Tiaret, Tiaret, Algeria
4. Physics Department, University Djelfa, Djelfa, Algeria
5. School of Physical Science and Technology, Southwest University, Chongqing, People’s Republic of China