1. Physics Institute, University of São Paulo 1 , 05508-090 São Paulo, SP, Brazil
2. Graduate Program in Science, State University of Ponta Grossa 2 , 84030-900 Ponta Grossa, PR, Brazil
3. University Center UNIFATEB 3 , 84266-010 Telêmaco Borba, PR, Brazil
4. Santa Helena Institute 4 , 84266-010 Telêmaco Borba, PR, Brazil
5. Mathematics and Statistics Department, State University of Ponta Grossa 5 , 84030-900 Ponta Grossa, PR, Brazil
6. Department of Physics, Federal University of Paraná 6 , 81531-980 Curitiba, PR, Brazil