Electronic states dressed by an out-of-plane supermodulation in the quasi-two-dimensional kagome superconductor CsV3Sb5

Luo, Yang; Peng, Shuting; Teicher, Samuel L.; Huai, Linwei; Hu, Yong; Han, Yulei; Ortiz, Brenden R.; Liang, Zuowei; Wei, Zhiyuan; Shen, Jianchang; Ou, Zhipeng; Wang, Bingqian; Miao, Yu; Guo, Mingyao; Hashimoto, Makoto; Lu, Donghui; Qiao, Zhenhua; Wang, Zhenyu; Wilson, Stephen D.; Chen, Xianhui; He, Junfeng

doi:10.1103/physrevb.105.l241111

Electronic states dressed by an out-of-plane supermodulation in the quasi-two-dimensional kagome superconductor CsV3 Sb5

Journal Article · Tue Jun 21 00:00:00 EDT 2022 · Physical Review. B

DOI:https://doi.org/10.1103/physrevb.105.l241111· OSTI ID:1880102

Luo, Yang ^[1]; ^[1]; Teicher, Samuel L. ^[2]; Huai, Linwei ^[1]; ^[1]; Han, Yulei ^[3]; Ortiz, Brenden R. ^[2]; Liang, Zuowei ^[1]; Wei, Zhiyuan ^[1]; ^[1]; Ou, Zhipeng ^[1]; Wang, Bingqian ^[1]; Miao, Yu ^[1]; Guo, Mingyao ^[1]; Hashimoto, Makoto ^[4]; Lu, Donghui ^[4]; Qiao, Zhenhua ^[1]; Wang, Zhenyu ^[1]; Wilson, Stephen D. ^[2]; Chen, Xianhui ^[1] more »

Univ. of Science and Technology of China, Anhui (China)
Univ. of California, Santa Barbara, CA (United States)
Fuzhou Univ., Fujian (China); Univ. of Science and Technology of China, Anhui (China)
SLAC National Accelerator Lab., Menlo Park, CA (United States)

CsV₃Sb₅ has attracted much recent attention as the first quasi-two-dimensional (2D) kagome superconductor. While the kagome layers are 2D in nature, increasing evidence has pointed to the importance of out-of-plane correlation in this material. However, it remains unclear whether such correlation can change the fundamental electronic structure of the quasi-2D system. Here, we reveal this missing piece of information, using angle-resolved photoemission spectroscopy, complemented by scanning tunneling microscope measurements. The three-dimensional electronic structures in the high-temperature state are revealed, which agree well with density-functional theory calculations. Electron energy bands are observed in the low-temperature state that exhibit additional periodicities along the out-of-plane momentum. Furthermore, these results reveal a direct response to the out-of-plane electronic supermodulation in the single-particle spectral function of CsV₃Sb₅, thus establishing an electronic platform to examine emergent phenomena beyond 2D limit in kagome superconductors.

View Accepted Manuscript (DOE)

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: Fundamental Research Funds for the Central Universities; National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1880102

Journal Information:: Physical Review. B, Journal Name: Physical Review. B Journal Issue: 24 Vol. 105; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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SUPERCONDUCTIVITY AND SUPERFLUIDITY
Angle-resolved photoemission spectroscopy
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Electronic states dressed by an out-of-plane supermodulation in the quasi-two-dimensional kagome superconductor CsV3 Sb5

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