Article ID Journal Published Year Pages File Type
1867568 Physics Letters A 2009 4 Pages PDF
Abstract

The phase diagram of the two-dimensional super-antiferromagnetic (SAF) Ising model in the presence of a magnetic field is investigated within the framework of a real-space renormalization-group (RSRG) approximation. We consider nearest neighbor ferromagnetic interactions along the x direction and antiferromagnetic interactions in the y direction. The main results are depicted in the magnetic field versus temperature phase diagram. A second-order transition line separates a SAF phase from a field induced ferromagnetic (FIF) phase. Our study reveals that the magnetic field induces a phase transition at a single temperature value, thus, we did not find any evidence of reentrant behavior as claimed by some authors.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Physics and Astronomy (General)
Authors
, , ,