Realizing Kagome Band Structure in Two-Dimensional Kagome Surface States of RV6Sn6 (R = Gd, Ho)

Peng, Shuting; Han, Yulei; Pokharel, Ganesh; Shen, Jianchang; Li, Zeyu; Hashimoto, Makoto; Lu, Donghui; Ortiz, Brenden R.; Luo, Yang; Li, Houchen; Guo, Mingyao; Wang, Bingqian; Cui, Shengtao; Sun, Zhe; Qiao, Zhenhua; Wilson, Stephen D.; He, Junfeng

doi:10.1103/physrevlett.127.266401

Title: Realizing Kagome Band Structure in Two-Dimensional Kagome Surface States of RV₆Sn₆ (R = Gd, Ho)

Journal Article · 20 December 2021 · Physical Review Letters

DOI: https://doi.org/10.1103/physrevlett.127.266401 · OSTI ID:1865305

Peng, Shuting ^[1];

^[2];

^[3]; Shen, Jianchang ^[1]; Li, Zeyu ^[1]; Hashimoto, Makoto ^[4];

^[4]; Ortiz, Brenden R. ^[3]; Luo, Yang ^[1]; Li, Houchen ^[1]; Guo, Mingyao ^[1]; Wang, Bingqian ^[1]; Cui, Shengtao ^[5]; Sun, Zhe ^[5]; Qiao, Zhenhua ^[1]; Wilson, Stephen D. ^[3];

^[1]

Univ. of Science and Technology of China, Hefei (China)
Fuzhou Univ. (China); Univ. of Science and Technology of China, Hefei (China)
Univ. of California, Santa Barbara, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
Univ. of Science and Technology of China, Hefei (China). National Synchrotron Radiation Laboratory (NSRL)

Here, we report angle resolved photoemission experiments on a newly discovered family of kagome metals RV₆Sn₆ (R = Gd, Ho). Intrinsic bulk states and surface states of the vanadium kagome layer are differentiated from those of other atomic sublattices by the real-space resolution of the measurements with a small beam spot. Characteristic Dirac cone, saddle point, and flat bands of the kagome lattice are observed. Our results establish the two-dimensional (2D) kagome surface states as a new platform to investigate the intrinsic kagome physics.

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

Sponsoring Organization:: National Natural Science Foundation of China (NSFC); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1865305

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 26 Vol. 127; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Title: Realizing Kagome Band Structure in Two-Dimensional Kagome Surface States of RV6Sn6 (R = Gd, Ho)

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Title: Realizing Kagome Band Structure in Two-Dimensional Kagome Surface States of RV₆Sn₆ (R = Gd, Ho)