259 citations · 2.6k across the 90 of their papers we have counts for
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Linear Response Theory for Shear Modulus and Raman Quadrupole Susceptibility: Significant Evidence for Orbital Nematic Fluctuations in Fe-Based Superconductors
Hiroshi Kontani, Youichi Yamakawa
The emergence of the nematic order and fluctuations has been discussed as a central issue in Fe-based superconductors. To clarify the origin of the nematicity, we focus on the shea…
High-Tc Superconductivity near the Anion Height Instability in Fe-based Superconductors: Analysis of LaFeAsOH
Seiichiro Onari, Youichi Yamakawa, Hiroshi Kontani
The isostructural transition in the tetragonal phase, with sizable change in the anion-height, is realized in heavily H-doped LaFeAsO and (La,P) co-doped CaFeAs. In these c…
Detection of antiferromagnetic ordering in heavily doped LaFeAsO1-xHx pnictide superconductors using nuclear-magnetic-resonance techniques
N. Fujiwara, S. Tsutsumi, S. Iimura +4
We studied double superconducting (SC) domes in LaFeAsO1-xHx by using 75As- and 1H-nuclear magnetic resonance techniques, and unexpectedly discovered that a new antiferromagnetic (…
Study of phase diagram and superconducting states in LaFeAsOH based on the multiorbital extended Hubbard model
Y. Yamakawa, S. Onari, H. Kontani +3
To understand the recently established unique magnetic and superconducting phase diagram of LaFeAsOH, we analyze the realistic multiorbital tight-binding model for $x=0…
Effect of realistic finite-size impurities on Tc in Fe-based superconductors based on the five-orbital tight-binding model
Youichi Yamakawa, Seiichiro Onari, Hiroshi Kontani
We present a systematic study of the impurity effect on Tc in Fe-based superconductors, assuming that the sign-reversal s-wave state due to inter-pocket repulsion (-wave sta…