Experimental observation of incoherent-coherent crossover and orbital-dependent band renormalization in iron chalcogenide superconductors

Simple item page
dc.citation.firstpage235138en_US
dc.citation.issueNumber23en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber92en_US
dc.contributor.authorLiu, Z.K.en_US
dc.contributor.authorYi, M.en_US
dc.contributor.authorZhang, Y.en_US
dc.contributor.authorHu, J.en_US
dc.contributor.authorYu, R.en_US
dc.contributor.authorZhu, J.-X.en_US
dc.contributor.authorHe, R.-H.en_US
dc.contributor.authorChen, Y.L.en_US
dc.contributor.authorHashimoto, M.en_US
dc.contributor.authorMoore, R.G.en_US
dc.contributor.authorMo, S.-K.en_US
dc.contributor.authorHussain, Z.en_US
dc.contributor.authorSi, Q.en_US
dc.contributor.authorMao, Z.Q.en_US
dc.contributor.authorLu, D.H.en_US
dc.contributor.authorShen, Z.-X.en_US
dc.date.accessioned2016-06-10T19:01:57Zen_US
dc.date.available2016-06-10T19:01:57Zen_US
dc.date.issued2015en_US
dc.description.abstractThe level of electronic correlation has been one of the key questions in understanding the nature of superconductivity. Among the iron-based superconductors, the iron chalcogenide family exhibits the strongest electron correlations. To gauge the correlation strength, we performed a systematic angle-resolved photoemission spectroscopy study on the iron chalcogenide series Fe1+ySexTe1−x (0<x<0.59), a model system with the simplest structure. Our measurement reveals an incoherent-to-coherent crossover in the electronic structure as the selenium ratio increases and the system evolves from a weakly localized to a more itinerant state. Furthermore, we found that the effective mass of bands dominated by the dxy orbital character significantly decreases with increasing selenium ratio, as compared to the dxz/dyz orbital-dominated bands. The orbital-dependent change in the correlation level agrees with theoretical calculations on the band structure renormalization, and may help to understand the onset of superconductivity in Fe1+ySexTe1−x.en_US
dc.identifier.citationLiu, Z.K., Yi, M., Zhang, Y., et al.. "Experimental observation of incoherent-coherent crossover and orbital-dependent band renormalization in iron chalcogenide superconductors." <i>Physical Review B,</i> 92, no. 23 (2015) American Physical Society: 235138. http://dx.doi.org/10.1103/PhysRevB.92.235138.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.92.235138en_US
dc.identifier.urihttps://hdl.handle.net/1911/90495en_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.titleExperimental observation of incoherent-coherent crossover and orbital-dependent band renormalization in iron chalcogenide superconductorsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
PhysRevB.92.235138.pdf
Size:
1.71 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Faculty Publications
Physics and Astronomy Publications