A tensor network study of the complete ground state phase diagram of the spin-1 bilinear-biquadratic Heisenberg model on the square lattice
Ido Niesen, Philippe Corboz
SciPost Phys. 3, 030 (2017) · published 28 October 2017
- doi: 10.21468/SciPostPhys.3.4.030
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Abstract
Using infinite projected entangled pair states, we study the ground state phase diagram of the spin-1 bilinear-biquadratic Heisenberg model on the square lattice directly in the thermodynamic limit. We find an unexpected partially nematic partially magnetic phase in between the antiferroquadrupolar and ferromagnetic regions. Furthermore, we describe all observed phases and discuss the nature of the phase transitions involved.
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Ontology / Topics
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Antiferroquadrupolar phases
Ferromagnetic phases
Infinite projected entangled pair states (iPEPS)
Magnetic phases
Spin-1 bilinear-biquadratic Heisenberg model
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