Spin-1 Heisenberg antiferromagnetic chain with exchange and single-ion anisotropies

Details Spin-1 Heisenberg antiferromagnetic chain with exchange and single-ion anisotropies Spin-1 Heisenberg antiferromagnetic chain with exchange and single-ion anisotropies

2009-01-14

arxiv.org/abs/0901.2081v2

Phys Rev B 79, 132406 (2009)

Physics

Condensed Matter

Statistical Mechanics

Ref. 1 corrected (also in the abstract)

Scientific paper

10.1103/PhysRevB.79.132406

Using density matrix renormalization group calculations, ground state properties of the spin-1 Heisenberg chain with exchange and single-ion anisotropies in an external field are studied. Our findings confirm and refine recent results by Sengupta and Batista, Physical Review Letters 99, 217205 (2007) (2007), on the same model applying Monte Carlo techniques. In particular, we present evidence for two types of biconical (or supersolid) and for two types of spin-flop (or superfluid) structures. Basic features of the quantum phase diagram may be interpreted qualitatively in the framework of classical spin models.

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