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dc.contributor.authorZhang, Chenglin
Lv, Weicheng
Tan, Guotai
Song, Yu
Carr, Scott V.
Chi, Songxue
Matsuda, M.
Christianson, A.D.
Fernandez-Baca, J.A.
Harriger, L.W.
Dai, Pengcheng
dc.date.accessioned 2017-05-04T19:43:54Z
dc.date.available 2017-05-04T19:43:54Z
dc.date.issued 2016
dc.identifier.citation Zhang, Chenglin, Lv, Weicheng, Tan, Guotai, et al.. "Electron doping evolution of the neutron spin resonance in NaFe1−xCoxAs." Physical Review B, 93, no. 17 (2016) American Physical Society: https://doi.org/10.1103/PhysRevB.93.174522.
dc.identifier.urihttps://hdl.handle.net/1911/94181
dc.description.abstract Neutron spin resonance, a collective magnetic excitation coupled to superconductivity, is one of the most prominent features shared by a broad family of unconventional superconductors including copper oxides, iron pnictides, and heavy fermions. In this paper, we study the doping evolution of the resonances in NaFe1−xCoxAs covering the entire superconducting dome. For the underdoped compositions, two resonance modes coexist. As doping increases, the low-energy resonance gradually loses its spectral weight to the high-energy one but remains at the same energy. By contrast, in the overdoped regime we only find one single resonance, which acquires a broader width in both energy and momentum but retains approximately the same peak position even when Tc drops by nearly a half compared to optimal doping. These results suggest that the energy of the resonance in electron overdoped NaFe1−xCoxAs is neither simply proportional to Tc nor the superconducting gap but is controlled by the multiorbital character of the system and doped impurity scattering effect.
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 Electron doping evolution of the neutron spin resonance in NaFe1−xCoxAs
dc.type Journal article
dc.citation.journalTitle Physical Review B
dc.citation.volumeNumber 93
dc.citation.issueNumber 17
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.93.174522
dc.type.publication publisher version
dc.citation.articleNumber 174522


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