Magnetism in an antiferromagnetic Ising nanoribbon

Abstract

The phase diagrams and magnetizations of an antiferromagnetic Ising nanoribbon are investigated by using the effective-field theory with correlations. The numerical results show that the magnetic properties in the nanoribbon may exhibit some different behaviors, depending on whether the applied transverse field takes zero value or a finite value. In particular, the reentrant phenomena and the ferrimagnetic behaviors have been found in the both cases, while some differences are observed. It has been discussed that the sign reversal of magnetization is possible, when a transverse field is applied to the system.