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Disassembling one-dimensional chains in molybdenum oxides |
Xian Du(杜宪)1,†, Yidian Li(李义典)1, Wenxuan Zhao(赵文轩)1, Runzhe Xu(许润哲)1, Kaiyi Zhai(翟恺熠)1, Yulin Chen(陈宇林)2,3,4,‡, and Lexian Yang(杨乐仙)1,5,6,§ |
1 State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China; 2 Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UK; 3 School of Physical Science and Technology, ShanghaiTech University and CAS-Shanghai Science Research Center, Shanghai 201210, China; 4 ShanghaiTech Laboratory for Topological Physics, Shanghai 200031, China; 5 Frontier Science Center for Quantum Information, Beijing 100084, China; 6 Collaborative Innovation Center of Quantum Matter, Beijing 100084, China |
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Abstract The dimensionality of quantum materials strongly affects their physical properties. Although many emergent phenomena, such as charge-density wave and Luttinger liquid behavior, are well understood in one-dimensional (1D) systems, the generalization to explore them in higher dimensional systems is still a challenging task. In this study, we aim to bridge this gap by systematically investigating the crystal and electronic structures of molybdenum-oxide family compounds, where the contexture of 1D chains facilitates rich emergent properties. While the quasi-1D chains in these materials share general similarities, such as the motifs made up of MoO$_{{6}}$ octahedrons, they exhibit vast complexity and remarkable tunability. We disassemble the 1D chains in molybdenum oxides with different dimensions and construct effective models to excellently fit their low-energy electronic structures obtained by ab initio calculations. Furthermore, we discuss the implications of such chains on other physical properties of the materials and the practical significance of the effective models. Our work establishes the molybdenum oxides as simple and tunable model systems for studying and manipulating the dimensionality in quantum systems.
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Received: 13 June 2024
Revised: 16 October 2024
Accepted manuscript online: 28 October 2024
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PACS:
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71.20.-b
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(Electron density of states and band structure of crystalline solids)
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71.15.Mb
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(Density functional theory, local density approximation, gradient and other corrections)
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73.21.-b
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(Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems)
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71.10.Pm
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(Fermions in reduced dimensions (anyons, composite fermions, Luttinger liquid, etc.))
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Corresponding Authors:
Xian Du, Yulin Chen, Lexian Yang
E-mail: x-du19@mails.tsinghua.edu.cn;yulin.chen@physics.ox.ac.uk;lxyang@tsinghua.edu.cn
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Cite this article:
Xian Du(杜宪), Yidian Li(李义典), Wenxuan Zhao(赵文轩), Runzhe Xu(许润哲), Kaiyi Zhai(翟恺熠), Yulin Chen(陈宇林), and Lexian Yang(杨乐仙) Disassembling one-dimensional chains in molybdenum oxides 2024 Chin. Phys. B 33 127102
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