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dc.contributor.authorYu, Rong
Si, Qimiao
dc.date.accessioned 2017-10-10T21:24:53Z
dc.date.available 2017-10-10T21:24:53Z
dc.date.issued 2017
dc.identifier.citation Yu, Rong and Si, Qimiao. "Orbital-selective Mott phase in multiorbital models for iron pnictides and chalcogenides." Physical Review B, 96, no. 12 (2017) American Physical Society: https://doi.org/10.1103/PhysRevB.96.125110.
dc.identifier.urihttps://hdl.handle.net/1911/97786
dc.description.abstract There is increasing recognition that the multiorbital nature of the 3 d electrons is important to the proper description of the electronic states in the normal state of the iron-based superconductors. Earlier studies of the pertinent multiorbital Hubbard models identified an orbital-selective Mott phase, which anchors the orbital-selective behavior seen in the overall phase diagram. An important characteristics of the models is that the orbitals are kinetically coupled, i.e., hybridized, to each other, which makes the orbital-selective Mott phase especially nontrivial. A U ( 1 ) slave-spin method was used to analyze the model with nonzero orbital-level splittings. Here we develop a Landau free-energy functional to shed further light on this issue. We put the microscopic analysis from the U ( 1 ) slave-spin approach in this perspective, and show that the intersite spin correlations are crucial to the renormalization of the bare hybridization amplitude towards zero and the concomitant realization of the orbital-selective Mott transition. Based on this insight, we discuss additional ways to study the orbital-selective Mott physics from a dynamical competition between the interorbital hybridization and collective spin correlations. Our results demonstrate the robustness of the orbital-selective Mott phase in the multiorbital models appropriate for the iron-based superconductors.
dc.language.iso eng
dc.publisher American Physical Society
dc.rights Article 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.title Orbital-selective Mott phase in multiorbital models for iron pnictides and chalcogenides
dc.type Journal article
dc.citation.journalTitle Physical Review B
dc.citation.volumeNumber 96
dc.citation.issueNumber 12
dc.identifier.digital Orbital-selective_Mott_phase
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.96.125110
dc.type.publication publisher version
dc.citation.articleNumber 125110


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