EasySpin forum

The final result however should not depend on the coupling order of the spins. The code that I posted previously to calculate the CG coefficient matrix for a three spins system was wrong, and that's why the results were not good if the first two spins are coupled antiferromagneticaly. The code below...

Maybe my previous post was poorly stated. A better question is whether is possible to extend the cgmatrix to work with three (or more) spins or just take as argument the vector returned by the spinvec function.

I used the code that you posted for a more complex system. The goal is to transform the states of a system containing three spins: two electron and one nuclear. If the electron spins couple ferromagnetically, the eigenvectors of the states resulted from the coupling of this spin state to the nuclear...

What about a system containing two coupled electron spins and a nuclear spin? If I consider your example and add a second spin 3/2, would the states be |1/2, 3/2, 1>, |1/2, 3/2, 0>, |1/2, 3/2, -1>, |1/2, 1/2, 1> etc. While it might be a very borderline usage scenario for EasySpin, I was wondering if...

I would like to further analyze the eigenvalues and eigenvectors of a spin Hamiltonian, but to do this I need to know how are the base states ordered. For example, in a S=1/2 and I=3/2 system, at zero field, does the labeling go |-1/2 -3/2>, |-1/2 -1/2> or in a different way? Thanks.