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- Publisher Website: 10.1103/PhysRevB.97.035124
- Scopus: eid_2-s2.0-85040620246
- WOS: WOS:000423112800001
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Article: Emergent orbitals in the cluster Mott insulator on a breathing kagome lattice
Title | Emergent orbitals in the cluster Mott insulator on a breathing kagome lattice |
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Authors | |
Issue Date | 2018 |
Publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prb/ |
Citation | Physical Review B: covering condensed matter and materials physics, 2018, v. 97 n. 3, article no. 035124 How to Cite? |
Abstract | © 2018 American Physical Society. Motivated by the recent developments on cluster Mott insulating materials such as the cluster magnet LiZn2Mo3O8, we consider the strong plaquette charge ordered regime of the extended Hubbard model on a breathing kagome lattice and reveal the properties of the cluster Mottness. The plaquette charge order arises from the intersite charge interaction and the collective motion of three localized electrons on the hexagon plaquettes. This model leads naturally to a reduction of the local moments by 2/3, as observed in LiZn2Mo3O8. Furthermore, at low temperatures, each hexagon plaquette contains an extra orbital-like degree of freedom in addition to the remaining spin 1/2. We explore the consequence of this emergent orbital degree of freedom. We point out the interaction between the local moments is naturally described by a Kugel-Khomskii spin-orbital model. We develop a parton approach and suggest a spin-liquid ground state with spinon Fermi surfaces for this model. We further predict an emergent orbital order when the system is under a strong magnetic field. Various experimental consequences for LiZn2Mo3O8 are discussed, including an argument that the charge ordering must be short ranged if the charge per Mo is slightly off stoichiometric. |
Persistent Identifier | http://hdl.handle.net/10722/266150 |
ISSN | 2023 Impact Factor: 3.2 2023 SCImago Journal Rankings: 1.345 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Chen, Gang | - |
dc.contributor.author | Lee, Patrick A. | - |
dc.date.accessioned | 2018-12-27T01:58:59Z | - |
dc.date.available | 2018-12-27T01:58:59Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Physical Review B: covering condensed matter and materials physics, 2018, v. 97 n. 3, article no. 035124 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | http://hdl.handle.net/10722/266150 | - |
dc.description.abstract | © 2018 American Physical Society. Motivated by the recent developments on cluster Mott insulating materials such as the cluster magnet LiZn2Mo3O8, we consider the strong plaquette charge ordered regime of the extended Hubbard model on a breathing kagome lattice and reveal the properties of the cluster Mottness. The plaquette charge order arises from the intersite charge interaction and the collective motion of three localized electrons on the hexagon plaquettes. This model leads naturally to a reduction of the local moments by 2/3, as observed in LiZn2Mo3O8. Furthermore, at low temperatures, each hexagon plaquette contains an extra orbital-like degree of freedom in addition to the remaining spin 1/2. We explore the consequence of this emergent orbital degree of freedom. We point out the interaction between the local moments is naturally described by a Kugel-Khomskii spin-orbital model. We develop a parton approach and suggest a spin-liquid ground state with spinon Fermi surfaces for this model. We further predict an emergent orbital order when the system is under a strong magnetic field. Various experimental consequences for LiZn2Mo3O8 are discussed, including an argument that the charge ordering must be short ranged if the charge per Mo is slightly off stoichiometric. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prb/ | - |
dc.relation.ispartof | Physical Review B: covering condensed matter and materials physics | - |
dc.title | Emergent orbitals in the cluster Mott insulator on a breathing kagome lattice | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1103/PhysRevB.97.035124 | - |
dc.identifier.scopus | eid_2-s2.0-85040620246 | - |
dc.identifier.volume | 97 | - |
dc.identifier.issue | 3 | - |
dc.identifier.spage | article no. 035124 | - |
dc.identifier.epage | article no. 035124 | - |
dc.identifier.eissn | 2469-9969 | - |
dc.identifier.isi | WOS:000423112800001 | - |
dc.identifier.issnl | 2469-9950 | - |