Doping-induced antiferromagnetic bicollinear insulating state and superconducting temperature of monolayer FeSe systems

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First-principles calculations of ionic-liquid-gated (Li,Fe)OHFeSe suggest a metal-insulator transition at a nominal Li/Fe ratio of 75/25 in the (Li,Fe)OH layer. While doping increases Fermi energy, the formation of an antiferromagnetic bicollinear phase is the key for the transition. It is expected that this insulating phase also exists in other FeSe systems upon heavy electron doping, and its presence can hinder the increase of superconducting temperature. These results offer clues on how to optimize superconductivity amid its interplay with magnetic properties in FeSe systems.
Publisher
AMER PHYSICAL SOC
Issue Date
2018-07
Language
English
Article Type
Article
Citation

PHYSICAL REVIEW B, v.98, no.1, pp.014504

ISSN
2469-9950
DOI
10.1103/PhysRevB.98.014504
URI
http://hdl.handle.net/10203/244677
Appears in Collection
PH-Journal Papers(저널논문)
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