Niobium diselenide has long served as a prototype of two-dimensional charge ordering, believed to arise from an instability of the electronic structure analogous to the one-dimensional Peierls mechanism. Despite this, various anomalous properties have recently been identified experimentally which cannot be explained by Peierls-like weak-coupling theories. We consider instead a model with strong electron-phonon coupling, taking into account both the full momentum and orbital dependence of the coupling matrix elements. We show that both are necessary for a consistent description of the full range of experimental observations. We argue that NbSe$_2$ is typical in this sense, and that any charge-ordered material in more than one dimension will generically be shaped by the momentum and orbital dependence of its electron-phonon coupling as well as its electronic structure. The consequences will be observable in many charge-ordered materials, including cuprate superconductors.
Tunability of the magnetic properties in Ni intercalated transition metal dichalcogenide NbSe$_2$
International Research Centre Magtop, Institute of Physics, Polish Academy of Sciences（波兰科学院物理研究所磁学国际研究中心）；Institute of Physics, Polish Academy of Sciences（波兰科学院物理研究所）
Metallic state in the vicinity of molecular orbital crystallization in the d$^1$ thiospinel ZnTi$_2$S$_4$ prepared via a reductive ion-exchange reaction
Orbital-Selective Spin-Orbit Mott Insulator in Fractional Valence Iridate La$_3$Ir$_3$O$_{11}$
Henan University（河南大学）；Henan Academy of Sciences（河南省科学院）；Westlake University（西湖大学）；Shandong University（山东大学）；Chinese Academy of Sciences（中国科学院）；Tianjin University（天津大学）；Nanjing University（南京大学）；Institute of Physics, Chinese Academy of Sciences（中国科学院物理研究所）；University of Chinese Academy of Sciences（中国科学院大学）
Massachusetts Institute of Technology（麻省理工学院）；Flatiron Institute（平顿研究所）；University of British Columbia（不列颠哥伦比亚大学）；Canadian Light Source, Inc.（加拿大光源公司）；Lund University（隆德大学）；Brookhaven National Laboratory（布鲁克海文国家实验室）；Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室）；Max Planck Institute for Solid State Research（马克斯·普朗克固态研究所）；Universität Würzburg（维尔茨堡大学）；Ludwig- Maximilians-Universität München（慕尼黑路德维希-马克西米利安大学）；Munich Center for Quantum Science and Technology (MCQST)（慕尼黑量子科学与技术中心）；Université Paris-Saclay（巴黎萨克雷大学）；CNRS（法国国家科学研究中心）；CEA（法国原子能和替代能源委员会）；Institut de Physique Théorique（理论物理研究所）；University of Tokyo（东京大学）；University of Stuttgart（斯图加特大学）；Collège de France（法兰西公学院）；Université PSL（巴黎文理研究大学）；Ecole Polytechnique（巴黎综合理工学院）；IP Paris（巴黎理工学院）；Université de Genève（日内瓦大学）
Dissecting superconductivity in the Ruddlesden-Popper nickelates: The role of electron correlation and interlayer magnetic exchange
Diamond Light Source（钻石光源）；National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology, University of Science and Technology of China（中国科学技术大学核科学与技术学院/国家同步辐射实验室）；Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-Sen University（中山大学物理学院/广东省铁电与磁器件重点实验室）；Department of Physics, University of Oxford（牛津大学物理系）；National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University（南京大学固体微结构物理国家重点实验室/物理学院）；Collaborative Innovation Center of Advanced Microstructures, Nanjing University（南京大学先进微结构协同创新中心）
