Discovery and construction of surface kagome electronic states induced by p-d electronic hybridization in Co3Sn2S2

被引:17
作者
Huang, Li [1 ,2 ,3 ]
Kong, Xianghua [4 ,5 ,6 ,7 ]
Zheng, Qi [1 ,2 ,3 ]
Xing, Yuqing [1 ,2 ,3 ]
Chen, Hui [1 ,2 ,3 ]
Li, Yan [1 ,2 ,3 ]
Hu, Zhixin [8 ,9 ]
Zhu, Shiyu [1 ,2 ,3 ]
Qiao, Jingsi [5 ,10 ]
Zhang, Yu-Yang [3 ]
Cheng, Haixia [5 ]
Cheng, Zhihai [5 ]
Qiu, Xianggang [1 ,2 ,3 ]
Liu, Enke [1 ,2 ,3 ]
Lei, Hechang [5 ]
Lin, Xiao [3 ]
Wang, Ziqiang [11 ]
Yang, Haitao [1 ,2 ,3 ]
Ji, Wei [5 ,12 ]
Gao, Hong-Jun [1 ,2 ,3 ,13 ]
机构
[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[3] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100190, Peoples R China
[4] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China
[5] Renmin Univ China, Dept Phys, Beijing Key Lab Optoelect Funct Mat & Micronano De, Beijing 100872, Peoples R China
[6] McGill Univ, Ctr Phys Mat, Montreal, PQ H3A 2T8, Canada
[7] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada
[8] Tianjin Univ, Inst Sci, Ctr Joint Quantum Studies, Tianjin 300350, Peoples R China
[9] Tianjin Univ, Inst Sci, Dept Phys, Tianjin 300350, Peoples R China
[10] Beijing Inst Technol, Sch Integrated Circuits & Elect, MIIT Key Lab Low Dimens Quantum Struct & Devices, Beijing 100081, Peoples R China
[11] Boston Coll, Dept Phys, Chestnut Hill, MA 02167 USA
[12] Renmin Univ China, Key Lab Quantum State Construct & Manipulat, Minist Educ, Beijing 100872, Peoples R China
[13] Hefei Natl Lab, Hefei 230088, Anhui, Peoples R China
基金
中国国家自然科学基金;
关键词
TOTAL-ENERGY CALCULATIONS; FORCE MICROSCOPY; FERMIONS;
D O I
10.1038/s41467-023-40942-2
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Kagome-lattice materials possess attractive properties for quantum computing applications, but their synthesis remains challenging. Herein, based on the compelling identification of the two cleavable surfaces of Co3Sn2S2, we show surface kagome electronic states (SKESs) on a Sn-terminated triangular Co3Sn2S2 surface. Such SKESs are imprinted by vertical p-d electronic hybridization between the surface Sn (subsurface S) atoms and the buried Co kagome-lattice network in the Co3Sn layer under the surface. Owing to the subsequent lateral hybridization of the Sn and S atoms in a corner-sharing manner, the kagome symmetry and topological electronic properties of the Co3Sn layer is proximate to the Sn surface. The SKESs and both hybridizations were verified via qPlus non-contact atomic force microscopy (nc-AFM) and density functional theory calculations. The construction of SKESs with tunable properties can be achieved by the atomic substitution of surface Sn (subsurface S) with other group III-V elements (Se or Te), which was demonstrated theoretically. This work exhibits the powerful capacity of nc-AFM in characterizing localized topological states and reveals the strategy for synthesis of large-area transition-metal-based kagome-lattice materials using conventional surface deposition techniques.
引用
收藏
页数:8
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