1. ENFOCAT-IN2UB, Universitat de Barcelona (UB), C/Martí i Franquès 1, 08028 Barcelona, Catalunya, Spain
2. Instituto de Investigaciones en Materiales, UNAM, 04510, CDMX, Mexico
3. Federal University of São Carlos, São Carlos, SP, Brazil
4. São Carlos Institute of Physics, University of São Paulo, CEP 13566-590, São Carlos, SP, Brazil