1. Institute of Physics and International Center of Physics, University of Brasília, Brasília 70919-970, Distrito Federal, Brazil
2. Institute of Physics, University of Brasília, Brasília 70919-970, Distrito Federal, Brazil
3. Departamento de Matemática, Universidade Estadual do Goiás, Campus Nordeste, Fornosa 73807-250, Goiás, Brazil
4. Department of Physics, Federal University of Pelotas, PO Box 354, Pelotas, Rio Grande do Sul 96010-900, Brazil
5. Computational Materials Laboratory, LCCMat, Institute of Physics, University of Brasília, 70910-900 Brasília, Brazil
6. Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology, Hermann-von-Helmholtz-Platz, 76344 Eggenstein-Leopoldshafen, Germany
7. Chemistry Department, Federal University of Paraná, CEP 81531-980 Curitiba, Brazil