Coherence Length of Electronic Nematicity in Iron-Based Superconductors
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866917787257012224 |
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| author | Kageyama, Yoichi Onishi, Asato Bareille, Cédric Ishida, Kousuke Mizukami, Yuta Ishida, Shigeyuki Eisaki, Hiroshi Hashimoto, Kenichiro Taniuchi, Toshiyuki Shin, Shik Kontani, Hiroshi Shibauchi, Takasada |
| author_facet | Kageyama, Yoichi Onishi, Asato Bareille, Cédric Ishida, Kousuke Mizukami, Yuta Ishida, Shigeyuki Eisaki, Hiroshi Hashimoto, Kenichiro Taniuchi, Toshiyuki Shin, Shik Kontani, Hiroshi Shibauchi, Takasada |
| contents | 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 $ξ_{\rm nem}$ 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. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2406_12705 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Coherence Length of Electronic Nematicity in Iron-Based Superconductors Kageyama, Yoichi Onishi, Asato Bareille, Cédric Ishida, Kousuke Mizukami, Yuta Ishida, Shigeyuki Eisaki, Hiroshi Hashimoto, Kenichiro Taniuchi, Toshiyuki Shin, Shik Kontani, Hiroshi Shibauchi, Takasada Superconductivity Strongly Correlated Electrons 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 $ξ_{\rm nem}$ 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. |
| title | Coherence Length of Electronic Nematicity in Iron-Based Superconductors |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2406.12705 |