Corresponding Author

Ali Jaafar

Institute for Solid State Physics and Optics, Wigner Research Center for Physics, P.O. Box 49, Budapest, Hungary

Institute of Physics, University of Szeged, Dom ter 9, Szeged, Hungary

Ministry of Higher Education and Scientific Research, Baghdad, Iraq

Correspondence

Ali Jaafar, Institute for Solid State Physics and Optics, Wigner Research Center for Physics, P.O. Box 49 H-1525, Budapest, Hungary

Email: alijaafar@szfki.hu