Charge order landscape and competition with superconductivity in kagome metals

Kang, Mingu; Fang, Shiang; Yoo, Jonggyu; Ortiz, Brenden R.; Oey, Yuzki M.; Choi, Jonghyeok; Ryu, Sae Hee; Kim, Jimin; Jozwiak, Chris; Bostwick, Aaron; Rotenberg, Eli; Kaxiras, Efthimios; Checkelsky, Joseph G.; Wilson, Stephen D.; Park, Jae-Hoon; Comin, Riccardo

doi:10.1038/s41563-022-01375-2

Charge order landscape and competition with superconductivity in kagome metals

Journal Article · Thu Nov 03 00:00:00 EDT 2022 · Nature Materials

DOI:https://doi.org/10.1038/s41563-022-01375-2· OSTI ID:2278637

^[1]; ^[2]; Yoo, Jonggyu ^[3]; Ortiz, Brenden R. ^[4]; Oey, Yuzki M. ^[4]; Choi, Jonghyeok ^[3]; Ryu, Sae Hee ^[5]; Kim, Jimin ^[6]; ^[5]; ^[5]; ^[5]; ^[7]; ^[2]; ^[4]; ^[3]; ^[2]

Max Planck POSTECH/Korea Research Initiative, Pohang (Korea, Republic of); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Max Planck POSTECH/Korea Research Initiative, Pohang (Korea, Republic of); Pohang University of Science and Technology, Pohang (Korea, Republic of)
University of California, Santa Barbara, CA (United States)
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Institute for Basic Science (IBS), Pohang (Korea, Republic of)
Harvard University, Cambridge, MA (United States)

In the kagome metals AV₃Sb₅ (A = K, Rb, Cs), three-dimensional charge order is the primary instability that sets the stage for other collective orders to emerge, including unidirectional stripe order, orbital flux order, electronic nematicity and superconductivity. In this report we use high-resolution angle-resolved photoemission spectroscopy to determine the microscopic structure of three-dimensional charge order in AV₃Sb₅ and its interplay with superconductivity. Our approach is based on identifying an unusual splitting of kagome bands induced by three-dimensional charge order, which provides a sensitive way to refine the spatial charge patterns in neighbouring kagome planes. Here we found a marked dependence of the three-dimensional charge order structure on composition and doping. The observed difference between CsV₃Sb₅ and the other compounds potentially underpins the double-dome superconductivity in CsV₃(Sb,Sn)₅ and the suppression of T_c in KV₃Sb₅ and RbV₃Sb₅. Our results provide fresh insights into the rich phase diagram of AV₃Sb₅.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: Air Force Office of Scientific Research (AFOSR); Gordon and Betty Moore Foundation; National Research Foundation of Korea; National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 2278637

Journal Information:: Nature Materials, Journal Name: Nature Materials Journal Issue: 2 Vol. 22; ISSN 1476-1122

Publisher:: Springer NatureCopyright Statement

Country of Publication:: United States

Language:: English

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