Magnetic and Ising quantum phase transitions in a model for isoelectronically tuned iron pnictides

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dc.citation.firstpage104515en_US
dc.citation.issueNumber10en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber93en_US
dc.contributor.authorWu, Jiandaen_US
dc.contributor.authorSi, Qimiaoen_US
dc.contributor.authorAbrahams, Elihuen_US
dc.date.accessioned2016-05-02T16:21:05Zen_US
dc.date.available2016-05-02T16:21:05Zen_US
dc.date.issued2016en_US
dc.description.abstractConsiderations of the observed bad-metal behavior in Fe-based superconductors led to an early proposal for quantum criticality induced by isoelectronic P for As doping in iron arsenides, which has since been experimentally confirmed. We study here an effective model for the isoelectronically tuned pnictides using a large-N approach. The model contains antiferromagnetic and Ising-nematic order parameters appropriate for J1−J2 exchange-coupled local moments on an Fe square lattice, and a damping caused by coupling to itinerant electrons. The zero-temperature magnetic and Ising transitions are concurrent and essentially continuous. The order-parameter jumps are very small, and are further reduced by the interplane coupling; consequently, quantum criticality occurs over a wide dynamical range. Our results reconcile recent seemingly contradictory experimental observations concerning the quantum phase transition in the P-doped iron arsenides.en_US
dc.identifier.citationWu, Jianda, Si, Qimiao and Abrahams, Elihu. "Magnetic and Ising quantum phase transitions in a model for isoelectronically tuned iron pnictides." <i>Physical Review B,</i> 93, no. 10 (2016) American Physical Society: 104515. http://dx.doi.org/10.1103/PhysRevB.93.104515.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.93.104515en_US
dc.identifier.urihttps://hdl.handle.net/1911/90385en_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.titleMagnetic and Ising quantum phase transitions in a model for isoelectronically tuned iron pnictidesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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