Turkish Journal of Physics
A Physical Realization of the Two-Dimensional Ising Model
DOI
-
Abstract
In 1925 E. Ising \cite{Ising} introduced the first and most elementary statistical model of a macroscopic system with short range interactions. This model - named after its inventor - was solved analytically for the non-trivial case of the interacting particles located on a two-dimensional (2d) lattice by Onsager \cite{Onsager} in 1944. This model and its solution provided the fundamental guidelines for all further theoretical developments in the theory of phase transitions. Despite the importance of the 2d-Ising model in Physics the experimental evidence gathered on it is scarce and incomplete, partly due to the very difficulty of realizing a truly 2d system in our three-coordinates world. In this paper, we describe a 2d system consisting of atomically thin films of magnetic Fe deposited onto a non-magnetic W-substrate. We show that Fe/W(110) near the magnetic critical point follows closely the predictions of the 2d-Ising model. In addition, we present a comprehensive confirmation of scaling and universality.
First Page
111
Last Page
119
Recommended Citation
MÜRSCH, Ch.; RAMSPERGER, U.; BACK, C.H.; VATERLAUS, A.; MAIR, U.; and PESCIA, D. (1997) "A Physical Realization of the Two-Dimensional Ising Model," Turkish Journal of Physics: Vol. 21: No. 1, Article 11. Available at: https://journals.tubitak.gov.tr/physics/vol21/iss1/11
