Topological Z_{2} invariant in Kitaev spin liquids: Classification of gapped spin liquids beyond projective symmetry group
A projective symmetry group (PSG) has been regarded as a classification theory of spin liquids. However, it does not include a symmetry-protected topological order of fermionic spinon excitations, and thus the classification of gapped spin liquids is incomplete. We demonstrate the classification bey...
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| Format: | Article |
| Language: | English |
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American Physical Society
2021-01-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.3.L012001 |