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- Publisher Website: 10.1103/PhysRevLett.121.046401
- Scopus: eid_2-s2.0-85050661360
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Article: Spinon Fermi Surface in a Cluster Mott Insulator Model on a Triangular Lattice and Possible Application to 1T-TaS2
Title | Spinon Fermi Surface in a Cluster Mott Insulator Model on a Triangular Lattice and Possible Application to 1T-TaS2 |
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Authors | |
Issue Date | 2018 |
Publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prl/ |
Citation | Physical Review Letters, 2018, v. 121 n. 4, article no. 046401 How to Cite? |
Abstract | © 2018 American Physical Society. 1T-TaS2 is a cluster Mott insulator on the triangular lattice with 13 Ta atoms forming a star of David cluster as the unit cell. We derive a two-dimensional XXZ spin-1/2 model with a four-spin ring exchange term to describe the effective low energy physics of a monolayer 1T-TaS2, where the effective spin-1/2 degrees of freedom arises from the Kramers degenerate spin-orbital states on each star of David. A large scale density matrix renormalization group simulation is further performed on this effective model and we find a gapless spin liquid phase with a spinon Fermi surface at a moderate to large strength region of the four-spin ring exchange term. All peaks in the static spin structure factor are found to be located on the "2kF" surface of a half-filled spinon on the triangular lattice. Experiments to detect the spinon Fermi surface phase in 1T-TaS2 are discussed. |
Persistent Identifier | http://hdl.handle.net/10722/266155 |
ISSN | 2022 Impact Factor: 8.6 2020 SCImago Journal Rankings: 3.688 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | He, Wen Yu | - |
dc.contributor.author | Xu, Xiao Yan | - |
dc.contributor.author | Chen, Gang | - |
dc.contributor.author | Law, K. T. | - |
dc.contributor.author | Lee, Patrick A. | - |
dc.date.accessioned | 2018-12-27T01:59:00Z | - |
dc.date.available | 2018-12-27T01:59:00Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Physical Review Letters, 2018, v. 121 n. 4, article no. 046401 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/10722/266155 | - |
dc.description.abstract | © 2018 American Physical Society. 1T-TaS2 is a cluster Mott insulator on the triangular lattice with 13 Ta atoms forming a star of David cluster as the unit cell. We derive a two-dimensional XXZ spin-1/2 model with a four-spin ring exchange term to describe the effective low energy physics of a monolayer 1T-TaS2, where the effective spin-1/2 degrees of freedom arises from the Kramers degenerate spin-orbital states on each star of David. A large scale density matrix renormalization group simulation is further performed on this effective model and we find a gapless spin liquid phase with a spinon Fermi surface at a moderate to large strength region of the four-spin ring exchange term. All peaks in the static spin structure factor are found to be located on the "2kF" surface of a half-filled spinon on the triangular lattice. Experiments to detect the spinon Fermi surface phase in 1T-TaS2 are discussed. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prl/ | - |
dc.relation.ispartof | Physical Review Letters | - |
dc.title | Spinon Fermi Surface in a Cluster Mott Insulator Model on a Triangular Lattice and Possible Application to 1T-TaS2 | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1103/PhysRevLett.121.046401 | - |
dc.identifier.scopus | eid_2-s2.0-85050661360 | - |
dc.identifier.volume | 121 | - |
dc.identifier.issue | 4 | - |
dc.identifier.spage | article no. 046401 | - |
dc.identifier.epage | article no. 046401 | - |
dc.identifier.eissn | 1079-7114 | - |
dc.identifier.isi | WOS:000439547100009 | - |
dc.identifier.issnl | 0031-9007 | - |