| Download | - View final version: Mott-Kondo insulator behavior in the iron oxychalcogenides (PDF, 1.8 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1103/PhysRevB.92.155139 |
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| Author | Search for: Freelon, B.; Search for: Liu, Yu Hao; Search for: Chen, Jeng-Lung; Search for: Craco, L.; Search for: Laad, M. S.; Search for: Leoni, S.; Search for: Chen, Jiaqi; Search for: Tao, Li; Search for: Wang, Hangdong; Search for: Flauca, R.1; Search for: Yamani, Z.1; Search for: Fang, Minghu; Search for: Chang, Chinglin; Search for: Guo, J.-H.; Search for: Hussain, Z. |
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| Name affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Abstract | We perform a combined experimental-theoretical study of the Fe-oxychalcogenides (FeOCh) series La2O2Fe2OM2 (M=S, Se), which are among the latest Fe-based materials with the potential to show unconventional high-Tc superconductivity (HTSC). A combination of incoherent Hubbard features in x-ray absorption and resonant inelastic x-ray scattering spectra, as well as resistivity data, reveal that the parent FeOCh are correlation-driven insulators. To uncover microscopics underlying these findings, we perform local density approximation-plus-dynamical mean field theory (LDA+DMFT) calculations that reveal a novel Mott-Kondo insulating state. Based upon good agreement between theory and a range of data, we propose that FeOCh may constitute an ideal testing ground to explore HTSC arising from a strange metal proximate to a novel selective-Mott quantum criticality. |
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| Publication date | 2015-10-23 |
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| Publisher | American Physical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23001562 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | f5ffbfbc-c3ec-4f0a-b274-a0d29c348237 |
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| Record created | 2017-03-07 |
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| Record modified | 2020-05-30 |
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