Transition to the Haldane phase driven by electron-electron correlations

A. Jażdżewska, M. Mierzejewski, M. Środa +4

One of the most famous quantum systems with topological properties, the spin $\mathcal{S}=1$ antiferromagnetic Heisenberg chain, is well-known to display exotic $\mathcal{S}=1/2$ e…