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Article: Clusterization transition between cluster Mott insulators on a breathing kagome lattice

TitleClusterization transition between cluster Mott insulators on a breathing kagome lattice
Authors
Issue Date2020
PublisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prresearch/
Citation
Physical Review Research, 2020, v. 2 n. 4, p. article no. 043424 How to Cite?
AbstractMotivated by recent experimental and numerical progress on various cluster Mott insulators, we study an extended Hubbard model on a breathing kagome lattice with a single electron orbital and 1/6 electron filling. Two distinct types of cluster localization are found in the cluster Mott regime due to the presence of the electron repulsion between neighboring sites, rather than from the on-site Hubbard interaction in the conventional Mott insulators. We introduce a unified parton construction framework to accommodate both types of cluster Mott insulating phase as well as a trivial Ferm liquid metal and discuss the phase transitions in the phase diagram. It is shown that, in one of the cluster localization phases, the strong intersite repulsion results into locally metallic behavior within one of two triangular clusters on the breathing kagome lattice. We further comment on experimental relevance to existing Mo-based cluster magnets.
DescriptionHybrid open access
Persistent Identifierhttp://hdl.handle.net/10722/295884
ISSN
2023 Impact Factor: 3.5
2023 SCImago Journal Rankings: 1.689
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYAO, XP-
dc.contributor.authorZhang, XT-
dc.contributor.authorKim, YB-
dc.contributor.authorWang, X-
dc.contributor.authorChen, G-
dc.date.accessioned2021-02-08T08:15:24Z-
dc.date.available2021-02-08T08:15:24Z-
dc.date.issued2020-
dc.identifier.citationPhysical Review Research, 2020, v. 2 n. 4, p. article no. 043424-
dc.identifier.issn2643-1564-
dc.identifier.urihttp://hdl.handle.net/10722/295884-
dc.descriptionHybrid open access-
dc.description.abstractMotivated by recent experimental and numerical progress on various cluster Mott insulators, we study an extended Hubbard model on a breathing kagome lattice with a single electron orbital and 1/6 electron filling. Two distinct types of cluster localization are found in the cluster Mott regime due to the presence of the electron repulsion between neighboring sites, rather than from the on-site Hubbard interaction in the conventional Mott insulators. We introduce a unified parton construction framework to accommodate both types of cluster Mott insulating phase as well as a trivial Ferm liquid metal and discuss the phase transitions in the phase diagram. It is shown that, in one of the cluster localization phases, the strong intersite repulsion results into locally metallic behavior within one of two triangular clusters on the breathing kagome lattice. We further comment on experimental relevance to existing Mo-based cluster magnets.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prresearch/-
dc.relation.ispartofPhysical Review Research-
dc.rightsCopyright [2020] by The American Physical Society. This article is available online at [http://dx.doi.org/10.1103/PhysRevResearch.2.043424].-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleClusterization transition between cluster Mott insulators on a breathing kagome lattice-
dc.typeArticle-
dc.identifier.emailZhang, XT: zhangxt@hku.hk-
dc.identifier.emailChen, G: gangchen@hku.hk-
dc.identifier.authorityChen, G=rp02491-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevResearch.2.043424-
dc.identifier.scopuseid_2-s2.0-85115905206-
dc.identifier.hkuros321280-
dc.identifier.volume2-
dc.identifier.issue4-
dc.identifier.spagearticle no. 043424-
dc.identifier.epagearticle no. 043424-
dc.identifier.isiWOS:000605518600004-
dc.publisher.placeUnited States-

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