1. Theoretical Physics Research Group, Advanced Institute of Materials Science
2. Ton Duc Thang University
3. Ho Chi Minh City
4. Vietnam
5. Faculty of Applied Sciences
6. Department of Energy Engineering and Physics
7. Amirkabir University of Technology
8. 14588 Tehran
9. Iran
10. Lehrstuhl für Theoretische Physik I
11. Technische Universität Dortmund
12. 44221 Dortmund
13. Germany