Ground state properties of antiferromagnetic anisotropic S=1 Heisenberg spin chains

Details Ground state properties of antiferromagnetic anisotropic S=1 Heisenberg spin chains Ground state properties of antiferromagnetic anisotropic S=1 Heisenberg spin chains

2011-11-23

arxiv.org/abs/1111.5547v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

Using (infinite) density matrix renormalization group techniques, ground state properties of antiferromagnetic S=1 Heisenberg spin chains with exchange and single-site anisotropies in an external field are studied. The phase diagram is known to display a plenitude of interesting phases. We elucidate quantum phase transitions between the supersolid and spin-liquid as well as the spin-liquid and the ferromagnetic phases. Analyzing spin correlation functions in the spin-liquid phase, commensurate and (two distinct) incommensurate regions are identified.

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