Magnetic order in ferromagnetically coupled spin ladders
Magnetic order in ferromagnetically coupled spin ladders
A model of coupled antiferromagnetic spin-1/2 Heisenberg ladders is studied with numerical techniques. In the case of ferromagnetic interladder coupling we find that the dynamic and static structure factor has a peak at $(\ensuremath{\pi},\ensuremath{\pi}/2)$ where the first (second) direction is along (transversal) to the ladders. In addition, we suggest that …