Low-temperature metal-insulator transition in the electron-doped iron chalcogenide FeSe superconductor
Low-temperature metal-insulator transition in the electron-doped iron chalcogenide FeSe superconductor
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DOI：
10.1209/0295-5075/91/27001
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发表时间：
2010-07
期刊：
影响因子：
--
通讯作者：
L. Craco;M. Laad;S. Leoni
中科院分区：
文献类型：
--
作者：
L. Craco;M. Laad;S. Leoni
The normal state of the iron chalcogenide superconductors shows a range of inexplicable features. Both bad metallic resistivity, characteristic pseudogap features and proximity to insulating states mark these systems as correlated non-Fermi liquid metals. Here, using the LDA+DMFT scheme with sizable multi-orbital correlations, we show how the incoherent non-Fermi liquid metallic state of tetragonal-FeSe superconductor is inherently unstable to the specific kind of insulator seen in experiments. We describe the metal-insulator transition in electron-doped FeSe microscopically, along with implications for the low-temperature specific heat and static spin susceptibility.
