Mal'nev Vadim (Professor)Nigussie Yhunebrhane2018-07-092023-11-092018-07-092023-11-092014-06http://10.90.10.223:4000/handle/123456789/7389We consider the behavior of 2D systems in the strong magnetic elds and at low temperature. The main attention is devoted to the quantum Hall e ect in two dimension electron gas and in one layered graphene . The original part of the work is the analysis of Landau level of mono layer graphene in cylinderical cooridinateenEffect in 2DES and GrapheneThesis