Charge order landscape and competition with superconductivity in kagome metals

被引:91
作者
Kang, Mingu [1 ,2 ]
Fang, Shiang [2 ]
Yoo, Jonggyu [1 ,3 ]
Ortiz, Brenden R. [4 ]
Oey, Yuzki M. [4 ]
Choi, Jonghyeok [1 ,3 ]
Ryu, Sae Hee [5 ]
Kim, Jimin [6 ]
Jozwiak, Chris [5 ]
Bostwick, Aaron [5 ]
Rotenberg, Eli [5 ]
Kaxiras, Efthimios [7 ,8 ]
Checkelsky, Joseph G. [2 ]
Wilson, Stephen D. [4 ]
Park, Jae-Hoon [1 ,3 ]
Comin, Riccardo [2 ]
机构
[1] Max Planck POSTECH Korea Res Initiat, Ctr Complex Phase Mat, Pohang, South Korea
[2] MIT, Dept Phys, Cambridge, MA 02139 USA
[3] Pohang Univ Sci & Technol, Dept Phys, Pohang, South Korea
[4] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA
[5] EO Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA USA
[6] Inst Basic Sci IBS, Ctr Artificial Low Dimens Elect Syst, Pohang, South Korea
[7] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[8] Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA
基金
新加坡国家研究基金会; 美国国家科学基金会;
关键词
TOTAL-ENERGY CALCULATIONS;
D O I
10.1038/s41563-022-01375-2
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The authors use high-resolution angle-resolved photoemission spectroscopy to determine the microscopic structure of three-dimensional charge order in AV(3)Sb(5) (A = K, Rb, Cs) and its interplay with superconductivity. In the kagome metals AV(3)Sb(5) (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. Here, we use high-resolution angle-resolved photoemission spectroscopy to determine the microscopic structure of three-dimensional charge order in AV(3)Sb(5) 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. 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 AV(3)Sb(5).
引用
收藏
页码:186 / +
页数:13
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