Quantum Loop States in Spin-Orbital Models on the Honeycomb Lattice
Fuente:
arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2015
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| _version_ | 1866912989412589568 |
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| author | Savary, Lucile |
| author_facet | Savary, Lucile |
| contents | We construct a physically realistic and analytically tractable model for spin-1 systems with orbital degeneracy on the honeycomb lattice, relevant to honeycomb materials with large Hund's and weak spin-orbit couplings, and two electrons in t2g orbitals. This model realizes many new phases whose building blocks are orbital loops decorated by Haldane chains. These include a Haldane loop crystal, a symmetry-protected topological phase, and, notably, a regime where the decorated loops resonate. When taken to the three-dimensional hyperhoneycomb lattice, the latter regime becomes a (symmetry-enriched) U(1) quantum spin-orbital liquid, "disordered" both in the spin and orbital channels. We hope this construction will pave the way for realizing many of the Haldane-chain-based phases which have been theoretically proposed in the literature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1511_01505 |
| institution | arXiv |
| publishDate | 2015 |
| record_format | arxiv |
| spellingShingle | Quantum Loop States in Spin-Orbital Models on the Honeycomb Lattice Savary, Lucile Strongly Correlated Electrons We construct a physically realistic and analytically tractable model for spin-1 systems with orbital degeneracy on the honeycomb lattice, relevant to honeycomb materials with large Hund's and weak spin-orbit couplings, and two electrons in t2g orbitals. This model realizes many new phases whose building blocks are orbital loops decorated by Haldane chains. These include a Haldane loop crystal, a symmetry-protected topological phase, and, notably, a regime where the decorated loops resonate. When taken to the three-dimensional hyperhoneycomb lattice, the latter regime becomes a (symmetry-enriched) U(1) quantum spin-orbital liquid, "disordered" both in the spin and orbital channels. We hope this construction will pave the way for realizing many of the Haldane-chain-based phases which have been theoretically proposed in the literature. |
| title | Quantum Loop States in Spin-Orbital Models on the Honeycomb Lattice |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/1511.01505 |