Abstract
In 1925 E. Ising [1] 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 [2] 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.
| Original language | English |
|---|---|
| Pages (from-to) | 111-119 |
| Number of pages | 9 |
| Journal | Turkish Journal of Physics |
| Volume | 21 |
| Issue number | 1 |
| State | Published - 1997 |
| Externally published | Yes |