1. Universidade Federal de Alagoas, Instituto de Física, Maceió, Alagoas 57072-900, BrazilbIslamic Azad University, Department of Physics, Tehran-North Branch, Tehran 16511-53311, Iran
2. COMSATS Institute of Information Technology, Department of Physics, Lahore 54000, PakistandUniversidade de São Paulo, Instituto de Física de São Carlos, São Carlos, São Paulo13563-120, Brazil