scholarly journals Impact of dynamic orbital correlations on magnetic excitations in the normal state of iron-based superconductors

2012 ◽  
Vol 86 (9) ◽  
Author(s):  
Wei-Cheng Lee ◽  
Weicheng Lv ◽  
J. M. Tranquada ◽  
Philip W. Phillips
Keyword(s):  
Normal State ◽  
Iron Based Superconductors ◽  
Magnetic Excitations ◽  
Iron Based

Spin Fluctuation Mechanism to Normal State Resistivity of Iron-Based Superconductors La[O[sub 1−x]F[sub x]]FeAs

2011 ◽  
Author(s):  
K. K. Choudhary ◽  
D. Prasad ◽  
N. Kaurav ◽  
Dinesh Varshney ◽  
Alka B. Garg ◽  
...  
Keyword(s):  
Normal State ◽  
Spin Fluctuation ◽  
Normal State Resistivity ◽  
Iron Based Superconductors ◽  
Iron Based

scholarly journals Importance of $${{d}}_{{{xy}}}$$ orbital and electron correlation in iron-based superconductors revealed by phase diagram for 1111-system

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tsuyoshi Kawashima ◽  
Shigeki Miyasaka ◽  
Hirokazu Tsuji ◽  
Takahiro Yamamoto ◽  
Masahiro Uekubo ◽  
...  
Keyword(s):  
Electron Correlation ◽  
Weak Coupling ◽  
Structural Parameters ◽  
Structural Flexibility ◽  
Superconducting Transition ◽  
Iron Based Superconductors ◽  
Wide Range ◽  
Band Filling ◽  
Iron Based ◽  
Correlation Strength

AbstractThe structural flexibility at three substitution sites in LaFeAsO enabled investigation of the relation between superconductivity and structural parameters over a wide range of crystal compositions. Substitutions of Nd for La, Sb or P for As, and F or H for O were performed. All these substitutions modify the local structural parameters, while the F/H-substitution also changes band filling. It was found that the superconducting transition temperature $$T_{\text{c}}$$ T c is strongly affected by the pnictogen height $$h_{Pn}$$ h Pn from the Fe-plane that controls the electron correlation strength and the size of the $$d_{xy}$$ d xy hole Fermi surface (FS). With increasing $$h_{Pn}$$ h Pn , weak coupling BCS superconductivity switches to the strong coupling non-BCS one where electron correlations and the $$d_{xy}$$ d xy hole FS may be important.

scholarly journals In-plane electronic anisotropy resulted from ordered magnetic moment in iron-based superconductors

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
S.-F. Wu ◽  
W.-L. Zhang ◽  
V. K. Thorsmølle ◽  
G. F. Chen ◽  
G. T. Tan ◽  
...  
Keyword(s):  
Magnetic Moment ◽  
Iron Based Superconductors ◽  
Iron Based
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