Quantum Heisenberg antiferromagnetic chains with exchange and single-ion anisotropies
Quantum Heisenberg antiferromagnetic chains with exchange and single-ion anisotropies
Using density matrix renormalization group calculations, ground state properties of the spin–1 Heisenberg chain with exchange and quadratic single-ion anisotropies in an external field are studied, for special choices of the two kinds of anisotropies. In particular, the phase diagram includes antiferromagnetic, spin-liquid (or spin-flop), IS2, and supersolid (or biconical) …