[1] Kyungpook Natl Univ, Sch Elect Engn & Comp Sci, Taegu 702701, South Korea
[2] Chungbuk Natl Univ, Coll Nat Sci, Phys Program BK21, Cheongju 361763, Chungbuk, South Korea
[3] Chungbuk Natl Univ, Coll Nat Sci, Dept Phys, Cheongju 361763, Chungbuk, South Korea
[4] Univ Ferhat Abbas Setif, Fac Sci, Dept Phys, Lab Phys Quant & Syst Dynam, Setif 19000, Algeria