Coherence Length of Electronic Nematicity in Iron-Based Superconductors
| Autor: | Kageyama, Yoichi, Onishi, Asato, Bareille, Cédric, Ishida, Kousuke, Mizukami, Yuta, Ishida, Shigeyuki, Eisaki, Hiroshi, Hashimoto, Kenichiro, Taniuchi, Toshiyuki, Shin, Shik, Kontani, Hiroshi, Shibauchi, Takasada |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.7566/JPSJ.93.103702 |
| Popis: | Recent developments in laser-excited photoemission electron microscopy (laser-PEEM) advance the visualization of electronic nematicity and nematic domain structures in iron-based superconductors. In FeSe and BaFe$_2$(As$_{0.87}$P$_{0.13}$)$_2$ superconductors, it has been reported that the thickness of the electronic nematic domain walls is unexpectedly long, leading to the formation of mesoscopic nematicity wave [T. Shimojima $\textit{et al.}$, Science $\textbf{373}$ (2021) 1122]. This finding demonstrates that the nematic coherence length $\xi_{\rm nem}$ can be decoupled from the lattice domain wall. Here, we report that the electronic domain wall thickness shows a distinct variation in related materials: it is similarly long in FeSe$_{0.9}$S$_{0.1}$ whereas it is much shorter in undoped BaFe$_2$As$_2$. We find a correlation between the thick domain walls and the non-Fermi liquid properties of normal-state resistivity above the nematic transition temperature. This suggests that the nematic coherence length can be enhanced by underlying spin-orbital fluctuations responsible for the anomalous transport properties. Comment: 5 pages, 3 figures |
| Databáze: | arXiv |
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