• Chinese Physics B
  • Vol. 29, Issue 9, (2020)
Jingjing Niu1、2, Wenjie Zhang1、2, Zhilin Li1、2, Sixian Yang3, Dayu Yan4, Shulin Chen5, Zhepeng Zhang6, Yanfeng Zhang6, Xinguo Ren3, Peng Gao2、5、7, Youguo Shi4, Dapeng Yu1、2、8, and Xiaosong Wu1、2、8、†
Author Affiliations
  • 1State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Beijing Key Laboratory of Quantum Devices, Peking University, Beijing 0087, China
  • 2Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
  • 3CAS Key Laboratory of Quantum Information, Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 20026, China
  • 4Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 5Electron Microscopy Laboratory, School of Physics, Peking University, Beijing 100871, China
  • 6Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  • 7International Center for Quantum Materials, School of Physics, Peking University, Beijing 10081, China
  • 8Department of Physics, Southern University of Science and Technology of China, Shenzhen 51055, China
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    DOI: 10.1088/1674-1056/abab85 Cite this Article
    Jingjing Niu, Wenjie Zhang, Zhilin Li, Sixian Yang, Dayu Yan, Shulin Chen, Zhepeng Zhang, Yanfeng Zhang, Xinguo Ren, Peng Gao, Youguo Shi, Dapeng Yu, Xiaosong Wu. Intercalation of van der Waals layered materials: A route towards engineering of electron correlation[J]. Chinese Physics B, 2020, 29(9): Copy Citation Text show less

    Abstract

    Being parent materials of two-dimensional (2D) crystals, van der Waals layered materials have received revived interest. In most 2D materials, the interaction between electrons is negligible. Introducing the interaction can give rise to a variety of exotic properties. Here, via intercalating a van der Waals layered compound VS2, we find evidence for electron correlation by extensive magnetic, thermal, electrical, and thermoelectric characterizations. The low temperature Sommerfeld coefficient is 64 mJ?K-2?mol-1 and the Kadowaki–Woods ratio rKW ~ 0.20a0. Both supports an enhancement of the electron correlation. The temperature dependences of the resistivity and thermopower indicate an important role played by the Kondo effect. The Kondo temperature TK is estimated to be around 8 K. Our results suggest intercalation as a potential means to engineer the electron correlation in van der Waals materials, as well as 2D materials.
    Jingjing Niu, Wenjie Zhang, Zhilin Li, Sixian Yang, Dayu Yan, Shulin Chen, Zhepeng Zhang, Yanfeng Zhang, Xinguo Ren, Peng Gao, Youguo Shi, Dapeng Yu, Xiaosong Wu. Intercalation of van der Waals layered materials: A route towards engineering of electron correlation[J]. Chinese Physics B, 2020, 29(9):
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