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

Authors :
Shengbai Zhang
Fawei Zheng
Junhyeok Bang
Myung Joon Han
Michael Lucking
Source :
Physical Review B. 98
Publication Year :
2018
Publisher :
American Physical Society (APS), 2018.

Abstract

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.

Details

ISSN :
24699969 and 24699950
Volume :
98
Database :
OpenAIRE
Journal :
Physical Review B
Accession number :
edsair.doi...........858b5cddeed2f1f2c21b670fee3627ed
Full Text :
https://doi.org/10.1103/physrevb.98.014504