Glide reflection symmetry, Brillouin zone folding, and superconducting pairing for the P4/nmm space group

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dc.citation.firstpage174520en_US
dc.citation.issueNumber17en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber92en_US
dc.contributor.authorNica, Emilian M.en_US
dc.contributor.authorYu, Rongen_US
dc.contributor.authorSi, Qimiaoen_US
dc.date.accessioned2016-06-10T19:01:57Z
dc.date.available2016-06-10T19:01:57Z
dc.date.issued2015en_US
dc.description.abstractMotivated by the studies of the superconducting pairing states in the iron-based superconductors, we analyze the effects of Brillouin zone folding procedure from a space-group symmetry perspective for a general class of materials with the P4/nmm space group. The Brillouin zone folding amounts to working with an effective 1-Fe unit cell, instead of the crystallographic 2-Fe unit cell. We show that the folding procedure can be justified by the validity of a glide reflection symmetry throughout the crystallographic Brillouin zone and by the existence of a minimal double degeneracy along the edges of the latter. We also demonstrate how the folding procedure fails when a local spin-orbit coupling is included although the latter does not break any of the space-group symmetries of the bare Hamiltonian. In light of these general symmetry considerations, we further discuss the implications of the glide reflection symmetry for the superconducting pairing in an effective multiorbital t−J1−J2 model. We find that, for spin-singlet pairing states, the P4/nmm space-group symmetry allows only even parity under the glide reflection and zero total momentum.en_US
dc.identifier.citationNica, Emilian M., Yu, Rong and Si, Qimiao. "Glide reflection symmetry, Brillouin zone folding, and superconducting pairing for the P4/nmm space group." <i>Physical Review B,</i> 92, no. 17 (2015) American Physical Society: 174520. http://dx.doi.org/10.1103/PhysRevB.92.174520.
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.92.174520en_US
dc.identifier.urihttps://hdl.handle.net/1911/90496
dc.language.isoengen_US
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.titleGlide reflection symmetry, Brillouin zone folding, and superconducting pairing for the P4/nmm space groupen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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