1. Institute of Chemistry, State University of Campinas (UNICAMP), Campinas, Brazil
2. Center for Computational Engineering and Sciences, State University of Campinas (UNICAMP), Campinas, Brazil
3. Institute for Physics & Astronomy, University of Potsdam, 14476 Potsdam-Golm, Germany
4. Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
5. Department of Physics, São Paulo State University (UNESP), Institute of Biosciences, Humanities and Exact Sciences, São José do Rio Preto, Brazil