| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Molecular Beam Epitaxy Growth and Electronic Structures of Monolayer GdTe$_{3}$ |
| Zhilin Xu1, Shuai-Hua Ji1,2, Lin Tang1, Jian Wu1,2, Na Li3*, Xinqiang Cai1*, and Xi Chen1,2 |
1State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, China
2Frontier Science Center for Quantum Information, Beijing 100084, China
3Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China
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| Cite this article: |
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Zhilin Xu, Shuai-Hua Ji, Lin Tang et al 2021 Chin. Phys. Lett. 38 077102 |
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Abstract GdTe$_{3}$ is a layered antiferromagnetic (AFM) metal with charge density wave (CDW). We grew monolayer (ML) GdTe$_{3}$ on graphene/6H-SiC(0001) substrates by molecular beam epitaxy. The electronic and magnetic structures are studied by scanning tunneling microscopy/spectroscopy, quasi-particle interference (QPI) and first-principles calculations. Strong evidence of CDW persisting at the two-dimensional (2D) limit is found. Band dispersions and partially gapped energy bands near the Fermi surface are revealed by the QPI patterns. By density functional theory $+ U$ calculations, AFM order with stripe pattern is found to be the magnetic ground state for ML GdTe$_{3}$. These results provide fundamental understanding and pave the way for further investigation of GdTe$_{3}$ at the 2D limit.
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Received: 01 April 2021
Published: 05 July 2021
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| PACS: |
81.15.Hi
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(Molecular, atomic, ion, and chemical beam epitaxy)
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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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87.64.Dz
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(Scanning tunneling and atomic force microscopy)
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31.15.E
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(Density-functional theory)
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| Fund: Supported by the National Natural Science Foundation of China (Grant Nos. 11934001 and 11874233), and the Science Challenge Project (Grant No. TZ2016004). |
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