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dc.contributor.authorYu, Rong
Zhu, Jian-Xin
Si, Qimiao
dc.date.accessioned 2017-06-14T16:55:02Z
dc.date.available 2017-06-14T16:55:02Z
dc.date.issued 2014
dc.identifier.citation Yu, Rong, Zhu, Jian-Xin and Si, Qimiao. "Orbital-selective superconductivity, gap anisotropy, and spin resonance excitations in a multiorbitalᅠt-J1-J2ᅠmodel for iron pnictides." Physical Review B, 89, no. 2 (2014) American Physical Society: https://doi.org/10.1103/PhysRevB.89.024509.
dc.identifier.urihttps://hdl.handle.net/1911/94838
dc.description.abstract We study the orbital-selective superconducting pairing in a five-orbital t-J1-J2 model for iron pnictides. Depending on the orbital selectivity of electron correlations and the orbital characters along the Fermi surface, the superconducting gap in an A1g pairing state may exhibit anisotropy. This anisotropy varies with the degree of J1-J2 magnetic frustration. In the superconducting state, the frequency dependence of the dynamical spin susceptibility at the antiferromagnetic wave vector (π,0) shows a resonance, whose width is enhanced by the orbital selectivity of the superconducting gap. When the degree of the orbital selectivity is sufficiently strong, the resonance peak may be split in two. We discuss the implications of our results on the recent angle-resolved photoemission and neutron-scattering measurements in several superconducting iron pnictides.
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 superconductivity, gap anisotropy, and spin resonance excitations in a multiorbitalᅠt-J1-J2ᅠmodel for iron pnictides
dc.type Journal article
dc.citation.journalTitle Physical Review B
dc.citation.volumeNumber 89
dc.citation.issueNumber 2
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.89.024509
dc.type.publication publisher version
dc.citation.articleNumber 024509ᅠ


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