Example

Ferromagnetic and antiferromagnetic chains

This is a so-called J1-J2 chain of S = 3/2 spins. There is a first-neighbour coupling J1, and a second-neigbour coupling J2 along z.

In the illustration below, J1 is ferromagnetic (<0), the value of J2 is varied, the magnetic anisotropy is defined as either axial or planar :

In the case of an antiferromagnetic chain, J1 is now antiferromagnetic (>0), the value of J2 is varied, the magnetic anisotropy is defined as either axial or planar :

The input files corresponding to the various cases illustrated above can be found in the download package.