Li, C., Wu, X., Wang, L., Liu, D., Cai, Y., Wang, Y., Gao, Q., Song, C., Huang, J., Dong, C., Liu, J., Ai, P., Luo, H., Yin, C., Liu, G., Huang, Y., Wang, Q., Jia, X., Zhang, F., ... Zhou, X. J. (2020). Spectroscopic Evidence for an Additional Symmetry Breaking in the Nematic State of FeSe Superconductor. Physical Review X, 10(3), Article 031033. https://doi.org/10.1103/PhysRevX.10.031033
@article{951d7cc0315048e0b7ece9c7bb1be167,
title = "Spectroscopic Evidence for an Additional Symmetry Breaking in the Nematic State of FeSe Superconductor",
abstract = "The iron-based superconductor FeSe has attracted much recent attention because of its simple crystal structure, distinct electronic structure, and rich physics exhibited by itself and its derivatives. Determination of its intrinsic electronic structure is crucial to understanding its physical properties and superconductivity mechanism. Both theoretical and experimental studies so far have provided a picture that FeSe consists of one holelike Fermi surface around the Brillouin zone center in its nematic state. Here we report direct observation of two holelike Fermi surface sheets around the Brillouin zone center, and the splitting of the associated bands, in the nematic state of FeSe by taking high-resolution laser-based angle-resolved photoemission measurements. These results indicate that, in addition to nematic order and spin-orbit coupling, there is an additional order in FeSe that breaks either inversion or time-reversal symmetries. The new Fermi surface topology asks for reexamination of the existing theoretical and experimental understanding of FeSe and stimulates further efforts to identify the origin of the hidden order in its nematic state.",
author = "Cong Li and Xianxin Wu and Le Wang and Defa Liu and Yongqing Cai and Yang Wang and Qiang Gao and Chunyao Song and Jianwei Huang and Chenxiao Dong and Jing Liu and Ping Ai and Hailan Luo and Chaohui Yin and Guodong Liu and Yuan Huang and Qingyan Wang and Xiaowen Jia and Fengfeng Zhang and Shenjin Zhang and Feng Yang and Zhimin Wang and Qinjun Peng and Zuyan Xu and Youguo Shi and Jiangping Hu and Tao Xiang and Lin Zhao and Zhou, {X. J.}",
note = "Publisher Copyright: {\textcopyright} 2020 authors.",
year = "2020",
month = sep,
doi = "10.1103/PhysRevX.10.031033",
language = "English",
volume = "10",
journal = "Physical Review X",
issn = "2160-3308",
publisher = "American Physical Society",
number = "3",
}
Li, C, Wu, X, Wang, L, Liu, D, Cai, Y, Wang, Y, Gao, Q, Song, C, Huang, J, Dong, C, Liu, J, Ai, P, Luo, H, Yin, C, Liu, G, Huang, Y, Wang, Q, Jia, X, Zhang, F, Zhang, S, Yang, F, Wang, Z, Peng, Q, Xu, Z, Shi, Y, Hu, J, Xiang, T, Zhao, L & Zhou, XJ 2020, 'Spectroscopic Evidence for an Additional Symmetry Breaking in the Nematic State of FeSe Superconductor', Physical Review X, vol. 10, no. 3, 031033. https://doi.org/10.1103/PhysRevX.10.031033
TY - JOUR
T1 - Spectroscopic Evidence for an Additional Symmetry Breaking in the Nematic State of FeSe Superconductor
AU - Li, Cong
AU - Wu, Xianxin
AU - Wang, Le
AU - Liu, Defa
AU - Cai, Yongqing
AU - Wang, Yang
AU - Gao, Qiang
AU - Song, Chunyao
AU - Huang, Jianwei
AU - Dong, Chenxiao
AU - Liu, Jing
AU - Ai, Ping
AU - Luo, Hailan
AU - Yin, Chaohui
AU - Liu, Guodong
AU - Huang, Yuan
AU - Wang, Qingyan
AU - Jia, Xiaowen
AU - Zhang, Fengfeng
AU - Zhang, Shenjin
AU - Yang, Feng
AU - Wang, Zhimin
AU - Peng, Qinjun
AU - Xu, Zuyan
AU - Shi, Youguo
AU - Hu, Jiangping
AU - Xiang, Tao
AU - Zhao, Lin
AU - Zhou, X. J.
N1 - Publisher Copyright:
© 2020 authors.
PY - 2020/9
Y1 - 2020/9
N2 - The iron-based superconductor FeSe has attracted much recent attention because of its simple crystal structure, distinct electronic structure, and rich physics exhibited by itself and its derivatives. Determination of its intrinsic electronic structure is crucial to understanding its physical properties and superconductivity mechanism. Both theoretical and experimental studies so far have provided a picture that FeSe consists of one holelike Fermi surface around the Brillouin zone center in its nematic state. Here we report direct observation of two holelike Fermi surface sheets around the Brillouin zone center, and the splitting of the associated bands, in the nematic state of FeSe by taking high-resolution laser-based angle-resolved photoemission measurements. These results indicate that, in addition to nematic order and spin-orbit coupling, there is an additional order in FeSe that breaks either inversion or time-reversal symmetries. The new Fermi surface topology asks for reexamination of the existing theoretical and experimental understanding of FeSe and stimulates further efforts to identify the origin of the hidden order in its nematic state.
AB - The iron-based superconductor FeSe has attracted much recent attention because of its simple crystal structure, distinct electronic structure, and rich physics exhibited by itself and its derivatives. Determination of its intrinsic electronic structure is crucial to understanding its physical properties and superconductivity mechanism. Both theoretical and experimental studies so far have provided a picture that FeSe consists of one holelike Fermi surface around the Brillouin zone center in its nematic state. Here we report direct observation of two holelike Fermi surface sheets around the Brillouin zone center, and the splitting of the associated bands, in the nematic state of FeSe by taking high-resolution laser-based angle-resolved photoemission measurements. These results indicate that, in addition to nematic order and spin-orbit coupling, there is an additional order in FeSe that breaks either inversion or time-reversal symmetries. The new Fermi surface topology asks for reexamination of the existing theoretical and experimental understanding of FeSe and stimulates further efforts to identify the origin of the hidden order in its nematic state.
UR - http://www.scopus.com/inward/record.url?scp=85090598652&partnerID=8YFLogxK
U2 - 10.1103/PhysRevX.10.031033
DO - 10.1103/PhysRevX.10.031033
M3 - Article
AN - SCOPUS:85090598652
SN - 2160-3308
VL - 10
JO - Physical Review X
JF - Physical Review X
IS - 3
M1 - 031033
ER -
Li C, Wu X, Wang L, Liu D, Cai Y, Wang Y et al. Spectroscopic Evidence for an Additional Symmetry Breaking in the Nematic State of FeSe Superconductor. Physical Review X. 2020 Sept;10(3):031033. doi: 10.1103/PhysRevX.10.031033
