Pressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe
Abstract FeSe is a unique high- $$T_c$$ T c iron-based superconductor in which nematicity, superconductivity, and magnetism are entangled with each other in the P-T phase diagram. We performed $$^{77}$$ 77 Se-nuclear magnetic resonance measurements under pressures of up to 3.9 GPa on 12% S-substitut...
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Nature Portfolio
2021
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oai:doaj.org-article:219bd1cddd344399849873da870457ba2021-12-02T18:53:19ZPressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe10.1038/s41598-021-96277-92045-2322https://doaj.org/article/219bd1cddd344399849873da870457ba2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96277-9https://doaj.org/toc/2045-2322Abstract FeSe is a unique high- $$T_c$$ T c iron-based superconductor in which nematicity, superconductivity, and magnetism are entangled with each other in the P-T phase diagram. We performed $$^{77}$$ 77 Se-nuclear magnetic resonance measurements under pressures of up to 3.9 GPa on 12% S-substituted FeSe, in which the complex overlap between the nematicity and magnetism are resolved. A pressure-induced Lifshitz transition was observed at 1.0 GPa as an anomaly of the density of states and as double superconducting (SC) domes accompanied by different types of antiferromagnetic (AF) fluctuations. The low- $$T_{\mathrm{c}}$$ T c SC dome below 1 GPa is accompanied by strong AF fluctuations, whereas the high- $$T_{\mathrm{c}}$$ T c SC dome develops above 1 GPa, where AF fluctuations are fairly weak. These results suggest the importance of the $$d_{xy}$$ d xy orbital and its intra-orbital coupling for the high- $$T_{\mathrm{c}}$$ T c superconductivity.T. KuwayamaK. MatsuuraJ. GouchiY. YamakawaY. MizukamiS. KasaharaY. MatsudaT. ShibauchiH. KontaniY. UwatokoN. FujiwaraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021) |
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Medicine R Science Q |
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Medicine R Science Q T. Kuwayama K. Matsuura J. Gouchi Y. Yamakawa Y. Mizukami S. Kasahara Y. Matsuda T. Shibauchi H. Kontani Y. Uwatoko N. Fujiwara Pressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe |
| description |
Abstract FeSe is a unique high- $$T_c$$ T c iron-based superconductor in which nematicity, superconductivity, and magnetism are entangled with each other in the P-T phase diagram. We performed $$^{77}$$ 77 Se-nuclear magnetic resonance measurements under pressures of up to 3.9 GPa on 12% S-substituted FeSe, in which the complex overlap between the nematicity and magnetism are resolved. A pressure-induced Lifshitz transition was observed at 1.0 GPa as an anomaly of the density of states and as double superconducting (SC) domes accompanied by different types of antiferromagnetic (AF) fluctuations. The low- $$T_{\mathrm{c}}$$ T c SC dome below 1 GPa is accompanied by strong AF fluctuations, whereas the high- $$T_{\mathrm{c}}$$ T c SC dome develops above 1 GPa, where AF fluctuations are fairly weak. These results suggest the importance of the $$d_{xy}$$ d xy orbital and its intra-orbital coupling for the high- $$T_{\mathrm{c}}$$ T c superconductivity. |
| format |
article |
| author |
T. Kuwayama K. Matsuura J. Gouchi Y. Yamakawa Y. Mizukami S. Kasahara Y. Matsuda T. Shibauchi H. Kontani Y. Uwatoko N. Fujiwara |
| author_facet |
T. Kuwayama K. Matsuura J. Gouchi Y. Yamakawa Y. Mizukami S. Kasahara Y. Matsuda T. Shibauchi H. Kontani Y. Uwatoko N. Fujiwara |
| author_sort |
T. Kuwayama |
| title |
Pressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe |
| title_short |
Pressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe |
| title_full |
Pressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe |
| title_fullStr |
Pressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe |
| title_full_unstemmed |
Pressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe |
| title_sort |
pressure-induced reconstitution of fermi surfaces and spin fluctuations in s-substituted fese |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/219bd1cddd344399849873da870457ba |
| work_keys_str_mv |
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