1. Department of Physics, West Virginia University, Morgantown, West Virginia 26506, United States
2. NanoMat/Q-Mat/CESAM and European Theoretical Spectroscopy Facility, Université de Liège (B5), B-4000 Liège, Belgium
3. Catalan Institute of Nanoscience and Nanotechnology (ICN2), Campus UAB, Bellaterra 08193, Barcelona Spain
4. Facultad de Ingeniería, Benemérita Universidad Autónoma de Puebla, Edificio ING2, Ciudad Universitaria, CP. 72570 Puebla, Mexico