M. Y. AliJ. PoulterMahidol University2018-10-192018-10-192013-06-01Chinese Physics B. Vol.22, No.6 (2013)167410562-s2.0-84880541554https://repository.li.mahidol.ac.th/handle/20.500.14594/32769In this work we study the correlation function of the ground state of a two-dimensional fully frustrated Ising model as well as spin glass. The Pfaffian method is used to calculate free energy and entropy as well as the correlation function. We estimate the exponent of spin correlation function for the fully frustrated model and spin glass. In this paper an overview of the latest results on the spin correlation function is presented. © 2013 Chinese Physical Society and IOP Publishing Ltd.Mahidol UniversityPhysics and AstronomyArticleSCOPUS10.1088/1674-1056/22/6/067502