南方科技大学知识苑(SUSTech KC): Van Hove annihilation and nematic instability on a kagome lattice

题名	Van Hove annihilation and nematic instability on a kagome lattice
作者	Jiang, Yu-Xiao 1; Shao, Sen 2; Xia, Wei 3,4; Denner, M. Michael 5; Ingham, Julian 6; Hossain, Md Shafayat 1; Qiu, Qingzheng 7; Zheng, Xiquan 7; Chen, Hongyu 2; Cheng, Zi-Jia 1; Yang, Xian P.1; Kim, Byunghoon 1; Yin, Jia-Xin8 ; Zhang, Songbo 5; Litskevich, Maksim 1; Zhang, Qi 1; Cochran, Tyler A.1; Peng, Yingying 7; Chang, Guoqing 2; Guo, Yanfeng 3,4; Thomale, Ronny 9; Neupert, Titus 5; Hasan, M. Zahid 1,10
通讯作者	Jiang, Yu-Xiao; Hasan, M. Zahid
发表日期	2024
DOI	10.1038/s41563-024-01914-z
发表期刊	Nature Materials 影响因子和分区
ISSN	1476-1122
EISSN	1476-4660
摘要	A nematic phase breaks the point-group symmetry of the crystal lattice and is known to emerge in correlated materials. Here we report the observation of an intra-unit-cell nematic order and associated Fermi surface deformation in the kagome metal ScV6Sn6. Using scanning tunnelling microscopy and scanning tunnelling spectroscopy, we reveal a stripe-like nematic order breaking the crystal rotational symmetry within the kagome lattice itself. Moreover, we identify a set of Van Hove singularities adhering to the kagome-layer electrons, which appear along one direction of the Brillouin zone and are annihilated along other high-symmetry directions, revealing rotational symmetry breaking. Via detailed spectroscopic maps, we further observe an elliptical deformation of the Fermi surface, which provides direct evidence for an electronically mediated nematic order. Our work not only bridges the gap between electronic nematicity and kagome physics but also sheds light on the potential mechanism for realizing symmetry-broken phases in correlated electron systems. © The Author(s), under exclusive licence to Springer Nature Limited 2024.
收录类别	EI ; SCI
语种	英语
学校署名	其他
资助项目	The M.Z.H. group acknowledges primary support from the US Department of Energy, Office of Science, National Quantum Information Science Research Centers, Quantum Science Center (at Oak Ridge National Laboratory) and Princeton University; scanning tunneling microscopy instrumentation support from the Gordon and Betty Moore Foundation (GBMF9461) and support with theory work; and support from the US Department of Energy under the Basic Energy Sciences program (grant no. DOE/BES DE-FG-02-05ER46200) for the theory and sample characterization work, including photoemission spectroscopy. Work at Nanyang Technological University was supported by the National Research Foundation, Singapore, under its Fellowship Award (NRF-NRFF13-2021-0010), the Agency for Science, Technology and Research (A*STAR) under its Manufacturing, Trade and Connectivity Individual Research Grant (grant no. M23M6c0100), the Singapore Ministry of Education AcRF Tier 2 grant (MOE-T2EP50222-0014) and the Nanyang Assistant Professorship grant (NTU-SUG). The computational work at Nanyang Technological University for this article was partially performed on resources of the National Supercomputing Centre, Singapore ( https://www.nscc.sg ). T.N., M.M.D. and S.Z. were supported by the European Research Council under the European Union\u2019s Horizon 2020 research and innovation programme (ERC-StG-Neupert-757867-PARATOP). S.Z. was also supported by the UZH Postdoc Grant. R.T. was supported by the Deutsche Forschungsgemeinschaft (German Research Foundation) through Project-ID 258499086-SFB 1170 and the Wurzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter\u2013ct.qmat Project-ID 390858490-EXC 2147. Y.G. acknowledges the Double First-Class Initiative Fund of ShanghaiTech University. W.X. acknowledges the research fund from the State Key Laboratory of Surface Physics and Department of Physics, Fudan University (grant no. KF2022_13). Y.P. is grateful for financial support from the National Natural Science Foundation of China (grant no. 12374143).
出版者	Nature Research
EI入藏号	20242916720279
EI主题词	Annihilation ; Crystal symmetry ; Fermi surface
EI分类号	Atomic and Molecular Physics:931.3 ; High Energy Physics:932.1 ; Crystal Lattice:933.1.1
ESI学科分类	MATERIALS SCIENCE
来源库	EV Compendex
引用统计
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/794634
专题	理学院_物理系南方科技大学
作者单位	1.Laboratory for Topological Quantum Matter and Advanced Spectroscopy, Department of Physics, Princeton University, Princeton; NJ, United States 2.Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore 3.School of Physical Science and Technology, ShanghaiTech University, Shanghai, China 4.ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, China 5.Department of Physics, University of Zürich, Zürich, Switzerland 6.Department of Physics, Columbia University, New York; NY, United States 7.International Center for Quantum Materials, School of Physics, Peking University, Beijing, China 8.Department of physics, Southern University of Science and Technology, Shenzhen, China 9.Institut für Theoretische Physik und Astrophysik, Julius-Maximilians-Universität Würzburg, Würzburg, Germany 10.Quantum Science Center, Oak Ridge; TN, United States
推荐引用方式 GB/T 7714	Jiang, Yu-Xiao,Shao, Sen,Xia, Wei,et al. Van Hove annihilation and nematic instability on a kagome lattice[J]. Nature Materials,2024.
APA	Jiang, Yu-Xiao.,Shao, Sen.,Xia, Wei.,Denner, M. Michael.,Ingham, Julian.,...&Hasan, M. Zahid.(2024).Van Hove annihilation and nematic instability on a kagome lattice.Nature Materials.
MLA	Jiang, Yu-Xiao,et al."Van Hove annihilation and nematic instability on a kagome lattice".Nature Materials (2024).