Synthetic-gauge-field stabilization of the chiral-spin-liquid phase

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dc.citation.firstpage061601(R)
dc.citation.issueNumber6
dc.citation.journalTitlePhysical Review A
dc.citation.volumeNumber93
dc.contributor.authorChen, Gang
dc.contributor.authorHazzard, Kaden R.A.
dc.contributor.authorRey, Ana Maria
dc.contributor.authorHermele, Michael
dc.contributor.orgRice Center for Quantum Materials
dc.date.accessioned2016-07-07T21:09:20Z
dc.date.available2016-07-07T21:09:20Z
dc.date.issued2016
dc.description.abstractWe explore the phase diagram of the SU(N) Hubbard models describing fermionic alkaline-earth-metal atoms in a square optical lattice with, on average, one atom per site, using a slave rotor mean-field approach. We find that the chiral spin liquid (CSL) predicted for N≥5 and large interactions passes through a fractionalized state with a spinon Fermi surface as interactions are decreased before transitioning to a weakly interacting metal. We show that by adding a uniform artificial gauge field with 2π/N flux per plaquette, the CSL becomes the ground state for all N≥3 at intermediate interactions, persists to weaker interactions, and exhibits a larger spin gap. For N≥5 we find the CSL is the ground state everywhere the system is a Mott insulator. The gauge field stabilization of the CSL at lower interactions, and thus at weaker lattice depths, together with the increased spin gap, can relax the temperature constraints required for its experimental realization in ultracold atom systems.
dc.identifier.citationChen, Gang, Hazzard, Kaden R.A., Rey, Ana Maria, et al.. "Synthetic-gauge-field stabilization of the chiral-spin-liquid phase." <i>Physical Review A,</i> 93, no. 6 (2016) American Physical Society: 061601(R). http://dx.doi.org/10.1103/PhysRevA.93.061601.
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevA.93.061601
dc.identifier.urihttps://hdl.handle.net/1911/90840
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.titleSynthetic-gauge-field stabilization of the chiral-spin-liquid phase
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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