Valence-bond solids, vestigial order, and emergent SO(5) symmetry in a two-dimensional quantum magnet
We introduce a quantum spin-1/2 model with many-body correlated Heisenberg-type interactions on the two-dimensional square lattice, designed so that the system can host a fourfold degenerate plaquette valence-bond solid (PVBS) ground state that spontaneously breaks Z_{4} symmetry. The system is sign...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020-09-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.033459 |