1. Instituto de Física “Gleb Wataghin”, Universidade Estadual de Campinas, Campinas 13083-859, SP, Brazil
2. University of Vienna, Faculty of Physics, 1090 Vienna, Austria
3. School of Physical Sciences and Nanotechnology, Yachay Tech University, 100119 Urcuquí, Ecuador
4. Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, SP, Brazil
5. Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstr. 3, 91058 Erlangen, Germany