Hello again - I'm finding the ground state of a spin 1/2 BCC lattice. I think its working, the simulation converges and if I plot just my unit cell, it is ferromagnetic for J1, or J1 and J2, < 0, and antiferromagnetic for the opposite case.
The problem is, if I plot an extended unit cell, there are spins on the outer edges that are facing a different direction from the ones in the unit cell, so that the cell periodic image looks frustrated. Have you encountered this?
Hello again - I'm finding the ground state of a spin 1/2 BCC lattice. I think its working, the simulation converges and if I plot just my unit cell, it is ferromagnetic for J1, or J1 and J2, < 0, and antiferromagnetic for the opposite case.
The problem is, if I plot an extended unit cell, there are spins on the outer edges that are facing a different direction from the ones in the unit cell, so that the cell periodic image looks frustrated. Have you encountered this?