Affiliation: | aPhysical Department, IV, Physics Institute, University of Göttingen, Friedrich Hund Platz 1, 37077 Göttingen, Germany bInstitute of Metal Physics, S. Kovalevskaya 18, 620219 Ekaterinburg, Russia cNational Research Center Solid State Physics Department El-Tahrir St., Dokki, Cairo, Egypt dDepartment of Physics, Faculty of Sciences, University of Moulay Ismail, B.P. 11201, Meknes, Morocco eInstitute of Advanced Technologies Research and Development, Eastern Mediterranean University, Famagusta, TRNC, Mersin 10, Turkey |