Mott-Kondo insulator behavior in the iron oxychalcogenides
Mott-Kondo insulator behavior in the iron oxychalcogenides
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铁氧硫属化物中的 Mott-Kondo 绝缘体行为
DOI：
10.1103/physrevb.92.155139
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发表时间：
2015-01
影响因子：
3.7
通讯作者：
Hussain Z.
中科院分区：
文献类型：
--
作者：
Freelon B.;Liu Yu Hao;Chen Jeng-Lung;Craco L.;Laad M. S.;Leoni S.;Chen Jiaqi;Tao Li;Wang Hangdong;Flauca R.;Yamani Z.;Fang Minghu;Chang Chinglin;Guo J. -H.;Hussain Z.
We perform a combined experimental-theoretical study of the Fe-oxychalcogenides $(\mathrm{FeO}\phantom{\rule{0.16em}{0ex}}Ch)$ series ${\mathrm{La}}_{2}{\mathrm{O}}_{2}{\mathrm{Fe}}_{2}\mathrm{O}{M}_{2}$ ($M=\mathrm{S}$, Se), which are among the latest Fe-based materials with the potential to show unconventional high-${T}_{c}$ 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 $\mathrm{FeO}\phantom{\rule{0.16em}{0ex}}Ch$ 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 $\mathrm{FeO}\phantom{\rule{0.16em}{0ex}}Ch$ 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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DOI：
10.1209/0295-5075/91/27001
发表时间：
2010-07
期刊：
EPL (Europhysics Letters)
影响因子：
--
作者：
L. Craco;M. Laad;S. Leoni
通讯作者：
L. Craco;M. Laad;S. Leoni
影响因子：
3.7
作者：
M. Laad;L. Craco;S. Leoni;H. Rosner
通讯作者：
M. Laad;L. Craco;S. Leoni;H. Rosner
DOI：
10.1088/0953-8984/21/6/064209
发表时间：
2008-11
期刊：
Journal of Physics: Condensed Matter
影响因子：
--
作者：
J. Tomczak;S. Biermann
通讯作者：
J. Tomczak;S. Biermann
DOI：
10.1088/0953-8984/26/14/145602
发表时间：
2013-07
期刊：
Journal of Physics: Condensed Matter
影响因子：
--
作者：
L. Craco;M. Laad;S. Leoni
通讯作者：
L. Craco;M. Laad;S. Leoni
影响因子：
8.6
作者：
M. Laad;L. Craco;Erwin Müller-Hartmann
通讯作者：
M. Laad;L. Craco;Erwin Müller-Hartmann