Tunable Van Hove Singularity without Structural Instability in Kagome Metal CsTi3Bi5

Bo Liu; Min Quan Kuang; Yang Luo; Yongkai Li; Cheng Hu; Jiarui Liu; Qian Xiao; Xiquan Zheng; Linwei Huai; Shuting Peng; Zhiyuan Wei; Jianchang Shen; Bingqian Wang; Yu Miao; Xiupeng Sun; Zhipeng Ou; Shengtao Cui; Zhe Sun; Makoto Hashimoto; Donghui Lu; Chris Jozwiak; Aaron Bostwick; Eli Rotenberg; Luca Moreschini; Alessandra Lanzara; Yao Wang; Yingying Peng; Yugui Yao; Zhiwei Wang; Junfeng He

doi:10.1103/PhysRevLett.131.026701

Tunable Van Hove Singularity without Structural Instability in Kagome Metal CsTi3Bi5

Bo Liu, Min Quan Kuang, Yang Luo, Yongkai Li, Cheng Hu, Jiarui Liu, Qian Xiao, Xiquan Zheng, Linwei Huai, Shuting Peng, Zhiyuan Wei, Jianchang Shen, Bingqian Wang, Yu Miao, Xiupeng Sun, Zhipeng Ou, Shengtao Cui, Zhe Sun, Makoto Hashimoto, Donghui LuChris Jozwiak, Aaron Bostwick, Eli Rotenberg, Luca Moreschini, Alessandra Lanzara, Yao Wang, Yingying Peng, Yugui Yao, Zhiwei Wang^*, Junfeng He^*

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

In kagome metal CsV3Sb5, multiple intertwined orders are accompanied by both electronic and structural instabilities. These exotic orders have attracted much recent attention, but their origins remain elusive. The newly discovered CsTi3Bi5 is a Ti-based kagome metal to parallel CsV3Sb5. Here, we report angle-resolved photoemission experiments and first-principles calculations on pristine and Cs-doped CsTi3Bi5 samples. Our results reveal that the van Hove singularity (vHS) in CsTi3Bi5 can be tuned in a large energy range without structural instability, different from that in CsV3Sb5. As such, CsTi3Bi5 provides a complementary platform to disentangle and investigate the electronic instability with a tunable vHS in kagome metals.

Original language	English
Article number	026701
Journal	Physical Review Letters
Volume	131
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.131.026701
Publication status	Published - 14 Jul 2023

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10.1103/PhysRevLett.131.026701

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Liu, B., Kuang, M. Q., Luo, Y., Li, Y., Hu, C., Liu, J., Xiao, Q., Zheng, X., Huai, L., Peng, S., Wei, Z., Shen, J., Wang, B., Miao, Y., Sun, X., Ou, Z., Cui, S., Sun, Z., Hashimoto, M., ... He, J. (2023). Tunable Van Hove Singularity without Structural Instability in Kagome Metal CsTi3Bi5. Physical Review Letters, 131(2), Article 026701. https://doi.org/10.1103/PhysRevLett.131.026701

@article{aefba46952064cd9958e796fa246c636,

title = "Tunable Van Hove Singularity without Structural Instability in Kagome Metal CsTi3Bi5",

abstract = "In kagome metal CsV3Sb5, multiple intertwined orders are accompanied by both electronic and structural instabilities. These exotic orders have attracted much recent attention, but their origins remain elusive. The newly discovered CsTi3Bi5 is a Ti-based kagome metal to parallel CsV3Sb5. Here, we report angle-resolved photoemission experiments and first-principles calculations on pristine and Cs-doped CsTi3Bi5 samples. Our results reveal that the van Hove singularity (vHS) in CsTi3Bi5 can be tuned in a large energy range without structural instability, different from that in CsV3Sb5. As such, CsTi3Bi5 provides a complementary platform to disentangle and investigate the electronic instability with a tunable vHS in kagome metals.",

author = "Bo Liu and Kuang, {Min Quan} and Yang Luo and Yongkai Li and Cheng Hu and Jiarui Liu and Qian Xiao and Xiquan Zheng and Linwei Huai and Shuting Peng and Zhiyuan Wei and Jianchang Shen and Bingqian Wang and Yu Miao and Xiupeng Sun and Zhipeng Ou and Shengtao Cui and Zhe Sun and Makoto Hashimoto and Donghui Lu and Chris Jozwiak and Aaron Bostwick and Eli Rotenberg and Luca Moreschini and Alessandra Lanzara and Yao Wang and Yingying Peng and Yugui Yao and Zhiwei Wang and Junfeng He",

note = "Publisher Copyright: {\textcopyright} 2023 American Physical Society.",

year = "2023",

month = jul,

day = "14",

doi = "10.1103/PhysRevLett.131.026701",

language = "English",

volume = "131",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "2",

}

Liu, B, Kuang, MQ, Luo, Y, Li, Y, Hu, C, Liu, J, Xiao, Q, Zheng, X, Huai, L, Peng, S, Wei, Z, Shen, J, Wang, B, Miao, Y, Sun, X, Ou, Z, Cui, S, Sun, Z, Hashimoto, M, Lu, D, Jozwiak, C, Bostwick, A, Rotenberg, E, Moreschini, L, Lanzara, A, Wang, Y, Peng, Y, Yao, Y , Wang, Z & He, J 2023, 'Tunable Van Hove Singularity without Structural Instability in Kagome Metal CsTi3Bi5', Physical Review Letters, vol. 131, no. 2, 026701. https://doi.org/10.1103/PhysRevLett.131.026701

TY - JOUR

T1 - Tunable Van Hove Singularity without Structural Instability in Kagome Metal CsTi3Bi5

AU - Liu, Bo

AU - Kuang, Min Quan

AU - Luo, Yang

AU - Li, Yongkai

AU - Hu, Cheng

AU - Liu, Jiarui

AU - Xiao, Qian

AU - Zheng, Xiquan

AU - Huai, Linwei

AU - Peng, Shuting

AU - Wei, Zhiyuan

AU - Shen, Jianchang

AU - Wang, Bingqian

AU - Miao, Yu

AU - Sun, Xiupeng

AU - Ou, Zhipeng

AU - Cui, Shengtao

AU - Sun, Zhe

AU - Hashimoto, Makoto

AU - Lu, Donghui

AU - Jozwiak, Chris

AU - Bostwick, Aaron

AU - Rotenberg, Eli

AU - Moreschini, Luca

AU - Lanzara, Alessandra

AU - Wang, Yao

AU - Peng, Yingying

AU - Yao, Yugui

AU - Wang, Zhiwei

AU - He, Junfeng

PY - 2023/7/14

Y1 - 2023/7/14

N2 - In kagome metal CsV3Sb5, multiple intertwined orders are accompanied by both electronic and structural instabilities. These exotic orders have attracted much recent attention, but their origins remain elusive. The newly discovered CsTi3Bi5 is a Ti-based kagome metal to parallel CsV3Sb5. Here, we report angle-resolved photoemission experiments and first-principles calculations on pristine and Cs-doped CsTi3Bi5 samples. Our results reveal that the van Hove singularity (vHS) in CsTi3Bi5 can be tuned in a large energy range without structural instability, different from that in CsV3Sb5. As such, CsTi3Bi5 provides a complementary platform to disentangle and investigate the electronic instability with a tunable vHS in kagome metals.

AB - In kagome metal CsV3Sb5, multiple intertwined orders are accompanied by both electronic and structural instabilities. These exotic orders have attracted much recent attention, but their origins remain elusive. The newly discovered CsTi3Bi5 is a Ti-based kagome metal to parallel CsV3Sb5. Here, we report angle-resolved photoemission experiments and first-principles calculations on pristine and Cs-doped CsTi3Bi5 samples. Our results reveal that the van Hove singularity (vHS) in CsTi3Bi5 can be tuned in a large energy range without structural instability, different from that in CsV3Sb5. As such, CsTi3Bi5 provides a complementary platform to disentangle and investigate the electronic instability with a tunable vHS in kagome metals.

UR - http://www.scopus.com/inward/record.url?scp=85164907279&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.131.026701

DO - 10.1103/PhysRevLett.131.026701

M3 - Article

C2 - 37505968

AN - SCOPUS:85164907279

SN - 0031-9007

VL - 131

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 026701

ER -

Tunable Van Hove Singularity without Structural Instability in Kagome Metal CsTi3Bi5

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