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

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dc.citation.firstpage061601(R)en_US
dc.citation.issueNumber6en_US
dc.citation.journalTitlePhysical Review Aen_US
dc.citation.volumeNumber93en_US
dc.contributor.authorChen, Gangen_US
dc.contributor.authorHazzard, Kaden R.A.en_US
dc.contributor.authorRey, Ana Mariaen_US
dc.contributor.authorHermele, Michaelen_US
dc.contributor.orgRice Center for Quantum Materialsen_US
dc.date.accessioned2016-07-07T21:09:20Zen_US
dc.date.available2016-07-07T21:09:20Zen_US
dc.date.issued2016en_US
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.en_US
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.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevA.93.061601en_US
dc.identifier.urihttps://hdl.handle.net/1911/90840en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
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.en_US
dc.titleSynthetic-gauge-field stabilization of the chiral-spin-liquid phaseen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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