Chin. Phys. Lett.  2021, Vol. 38 Issue (1): 017101    DOI: 10.1088/0256-307X/38/1/017101
Large-Area Freestanding Weyl Semimetal WTe$_{2}$ Membranes
Yequan Chen1, Ruxin Liu1, Yongda Chen1, Xiao Yuan1, Jiai Ning1, Chunchen Zhang2, Liming Chen1, Peng Wang2, Liang He1, Rong Zhang1, Yongbing Xu1*, and Xuefeng Wang1*
1Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
2College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
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Yequan Chen, Ruxin Liu, Yongda Chen et al  2021 Chin. Phys. Lett. 38 017101
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Abstract We report a universal transfer methodology for producing artificial heterostructures of large-area freestanding single-crystalline WTe$_{2}$ membranes on diverse target substrates. The transferred WTe$_{2}$ membranes exhibit a nondestructive structure with a carrier mobility comparable to that of as-grown films ($\sim $179–1055 cm$^{2}$$\cdot$V$^{-1}$$\cdot$s$^{-1}$). Furthermore, the transferred membranes show distinct Shubnikov–de Haas quantum oscillations as well as weak localization/weak anti-localization. These results provide a new approach to the development of atom manufacturing and devices based on atomic-level, large-area topological quantum films.
Received: 02 November 2020      Published: 06 January 2021
PACS:  71.20.Be (Transition metals and alloys)  
  73.50.Jt (Galvanomagnetic and other magnetotransport effects)  
  61.72.-y (Defects and impurities in crystals; microstructure)  
Fund: Supported by the National Key R&D Program of China (Grant No. 2017YFA0206304), the National Natural Science Foundation of China (Grant Nos. 11874203, 61822403, U1732159, 11774160, and 61427812), and the Fundamental Research Funds for the Central Universities (Grant No. 021014380080).
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Yequan Chen
Ruxin Liu
Yongda Chen
Xiao Yuan
Jiai Ning
Chunchen Zhang
Liming Chen
Peng Wang
Liang He
Rong Zhang
Yongbing Xu
and Xuefeng Wang
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