Flat bands and distinct density wave orders in correlated Kagome superconductor CsCr3Sb5

Shuting Peng; Yulei Han; Yongkai Li; Jianchang Shen; Yu Miao; Yang Luo; Linwei Huai; Zhipeng Ou; Yuxiang Chen; Deng Hu; Hongyu Li; Ziji Xiang; Zhengtai Liu; Dawei Shen; Makoto Hashimoto; Donghui Lu; Xiang Li; Zhenhua Qiao; Zhiwei Wang; Junfeng He

doi:10.1007/s11433-025-2773-3

Flat bands and distinct density wave orders in correlated Kagome superconductor CsCr₃Sb₅

Shuting Peng
, Yulei Han
, Yongkai Li
, Jianchang Shen
, Yu Miao
, Yang Luo
, Linwei Huai
, Zhipeng Ou
, Yuxiang Chen
, Deng Hu
, Hongyu Li
, Ziji Xiang
, Zhengtai Liu
, Dawei Shen
, Makoto Hashimoto
, Donghui Lu
, Xiang Li
, Zhenhua Qiao^*
, Zhiwei Wang^*
, Junfeng He^*

^*此作品的通讯作者

物理学院

University of Science and Technology of China
Fuzhou University
Beijing Institute of Technology
CAS - Shanghai Advanced Research Institute
Stanford Synchrotron Radiation Lightsource

科研成果: 期刊稿件 › 文章 › 同行评审

6 引用（Scopus）

摘要

Kagome metal CsV₃Sb₅ has attracted much recent attention due to the coexistence of multiple exotic orders and the associated proposals to mimic unconventional high temperature superconductors. Nevertheless, magnetism and strong electronic correlations—two essential ingredients for unconventional superconductivity, are absent in this V-based Kagome metal. CsCr₃Sb₅ is a newly discovered Cr-based parallel of CsV₃Sb₅, in which magnetism appears with charge density wave and superconductivity at different temperature and pressure regions. Enhanced electronic correlations are also suggested by theoretical proposals due to the calculated flat bands. Here, we report angle-resolved photoemission measurements and first-principles calculations on this new material system. Electron energy bands and the associated orbitals are resolved. Flat bands are observed near the Fermi level. Doping dependent measurements on Cs(V_1−xCr_x)₃Sb₅ reveal a gradually enhanced band renormalization from CsV₃Sb₅ to CsCr₃Sb₅, accompanied by distinct spatial symmetry breaking states in the phase diagram.

源语言	英语
期刊论文编号	217412
期刊	Science China: Physics, Mechanics and Astronomy
卷	69
期	1
DOI	https://doi.org/10.1007/s11433-025-2773-3
出版状态	已出版 - 1月 2026

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10.1007/s11433-025-2773-3

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Peng, S., Han, Y., Li, Y., Shen, J., Miao, Y., Luo, Y., Huai, L., Ou, Z., Chen, Y., Hu, D., Li, H., Xiang, Z., Liu, Z., Shen, D., Hashimoto, M., Lu, D., Li, X., Qiao, Z., Wang, Z., & He, J. (2026). Flat bands and distinct density wave orders in correlated Kagome superconductor CsCr₃Sb₅. Science China: Physics, Mechanics and Astronomy, 69(1), 期刊论文 217412. https://doi.org/10.1007/s11433-025-2773-3

@article{a3a3c8dccbe7405c894504ae582cbb52,

title = "Flat bands and distinct density wave orders in correlated Kagome superconductor CsCr3Sb5",

abstract = "Kagome metal CsV3Sb5 has attracted much recent attention due to the coexistence of multiple exotic orders and the associated proposals to mimic unconventional high temperature superconductors. Nevertheless, magnetism and strong electronic correlations{\textemdash}two essential ingredients for unconventional superconductivity, are absent in this V-based Kagome metal. CsCr3Sb5 is a newly discovered Cr-based parallel of CsV3Sb5, in which magnetism appears with charge density wave and superconductivity at different temperature and pressure regions. Enhanced electronic correlations are also suggested by theoretical proposals due to the calculated flat bands. Here, we report angle-resolved photoemission measurements and first-principles calculations on this new material system. Electron energy bands and the associated orbitals are resolved. Flat bands are observed near the Fermi level. Doping dependent measurements on Cs(V1−xCrx)3Sb5 reveal a gradually enhanced band renormalization from CsV3Sb5 to CsCr3Sb5, accompanied by distinct spatial symmetry breaking states in the phase diagram.",

keywords = "ARPES, Kagome lattice, strongly correlated system",

author = "Shuting Peng and Yulei Han and Yongkai Li and Jianchang Shen and Yu Miao and Yang Luo and Linwei Huai and Zhipeng Ou and Yuxiang Chen and Deng Hu and Hongyu Li and Ziji Xiang and Zhengtai Liu and Dawei Shen and Makoto Hashimoto and Donghui Lu and Xiang Li and Zhenhua Qiao and Zhiwei Wang and Junfeng He",

note = "Publisher Copyright: {\textcopyright} Science China Press 2025.",

year = "2026",

month = jan,

doi = "10.1007/s11433-025-2773-3",

language = "English",

volume = "69",

journal = "Science China: Physics, Mechanics and Astronomy",

issn = "1674-7348",

publisher = "Science China Press",

number = "1",

}

Peng, S, Han, Y, Li, Y, Shen, J, Miao, Y, Luo, Y, Huai, L, Ou, Z, Chen, Y, Hu, D, Li, H, Xiang, Z, Liu, Z, Shen, D, Hashimoto, M, Lu, D, Li, X, Qiao, Z, Wang, Z & He, J 2026, 'Flat bands and distinct density wave orders in correlated Kagome superconductor CsCr₃Sb₅', Science China: Physics, Mechanics and Astronomy, 卷 69, 号码 1, 217412. https://doi.org/10.1007/s11433-025-2773-3

TY - JOUR

T1 - Flat bands and distinct density wave orders in correlated Kagome superconductor CsCr3Sb5

AU - Peng, Shuting

AU - Han, Yulei

AU - Li, Yongkai

AU - Shen, Jianchang

AU - Miao, Yu

AU - Luo, Yang

AU - Huai, Linwei

AU - Ou, Zhipeng

AU - Chen, Yuxiang

AU - Hu, Deng

AU - Li, Hongyu

AU - Xiang, Ziji

AU - Liu, Zhengtai

AU - Shen, Dawei

AU - Hashimoto, Makoto

AU - Lu, Donghui

AU - Li, Xiang

AU - Qiao, Zhenhua

AU - Wang, Zhiwei

AU - He, Junfeng

PY - 2026/1

Y1 - 2026/1

N2 - Kagome metal CsV3Sb5 has attracted much recent attention due to the coexistence of multiple exotic orders and the associated proposals to mimic unconventional high temperature superconductors. Nevertheless, magnetism and strong electronic correlations—two essential ingredients for unconventional superconductivity, are absent in this V-based Kagome metal. CsCr3Sb5 is a newly discovered Cr-based parallel of CsV3Sb5, in which magnetism appears with charge density wave and superconductivity at different temperature and pressure regions. Enhanced electronic correlations are also suggested by theoretical proposals due to the calculated flat bands. Here, we report angle-resolved photoemission measurements and first-principles calculations on this new material system. Electron energy bands and the associated orbitals are resolved. Flat bands are observed near the Fermi level. Doping dependent measurements on Cs(V1−xCrx)3Sb5 reveal a gradually enhanced band renormalization from CsV3Sb5 to CsCr3Sb5, accompanied by distinct spatial symmetry breaking states in the phase diagram.

AB - Kagome metal CsV3Sb5 has attracted much recent attention due to the coexistence of multiple exotic orders and the associated proposals to mimic unconventional high temperature superconductors. Nevertheless, magnetism and strong electronic correlations—two essential ingredients for unconventional superconductivity, are absent in this V-based Kagome metal. CsCr3Sb5 is a newly discovered Cr-based parallel of CsV3Sb5, in which magnetism appears with charge density wave and superconductivity at different temperature and pressure regions. Enhanced electronic correlations are also suggested by theoretical proposals due to the calculated flat bands. Here, we report angle-resolved photoemission measurements and first-principles calculations on this new material system. Electron energy bands and the associated orbitals are resolved. Flat bands are observed near the Fermi level. Doping dependent measurements on Cs(V1−xCrx)3Sb5 reveal a gradually enhanced band renormalization from CsV3Sb5 to CsCr3Sb5, accompanied by distinct spatial symmetry breaking states in the phase diagram.

KW - ARPES

KW - Kagome lattice

KW - strongly correlated system

UR - https://www.scopus.com/pages/publications/105021085448

U2 - 10.1007/s11433-025-2773-3

DO - 10.1007/s11433-025-2773-3

M3 - Article

AN - SCOPUS:105021085448

SN - 1674-7348

VL - 69

JO - Science China: Physics, Mechanics and Astronomy

JF - Science China: Physics, Mechanics and Astronomy

IS - 1

M1 - 217412

ER -

Flat bands and distinct density wave orders in correlated Kagome superconductor CsCr3Sb5

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Flat bands and distinct density wave orders in correlated Kagome superconductor CsCr₃Sb₅