| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Observation of Weak Anti-Localization and Electron-Electron Interaction on Few-Layer 1T$'$-MoTe$_2$ Thin Films |
| Qin Wang1,3, Peng Yu2, Xiangwei Huang1,3, Jie Fan1, Xiunian Jing1,4, Zhongqing Ji1, Zheng Liu2**, Guangtong Liu1**, Changli Yang1,4**, Li Lu1,4 |
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190
2School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
3University of Chinese Academy of Sciences, Beijing 100049
4Collaborative Innovation Center of Quantum Matter, Beijing 100871
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| Cite this article: |
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Qin Wang, Peng Yu, Xiangwei Huang et al 2018 Chin. Phys. Lett. 35 077303 |
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Abstract Electronic transports of few-layer 1T$'$-MoTe$_2$ films are measured at temperatures down to 0.26 K. The low-temperature conductivity exhibits logarithmic temperature dependence and negative magneto response. The negative magnetoconductivity can be well fitted by the two-dimensional weak anti-localization theory taking a single channel of electrons into account, with the parameters $\alpha\approx -0.5$ and $l_{\phi} \propto T^{-0.5}$. The logarithmic temperature dependence has a positive slope $\kappa\approx0.75$, indicating the dominance of electron-electron interaction over the weak anti-localization effect, with an apparently negative Coulomb screening factor $F$ that demands future work for clarification.
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Received: 28 March 2018
Published: 24 June 2018
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| PACS: |
73.20.Fz
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(Weak or Anderson localization)
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73.20.Jc
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(Delocalization processes)
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73.50.-h
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(Electronic transport phenomena in thin films)
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| Fund: Supported by the National Basic Research Program of China under Grant Nos 2014CB920904 and 2015CB921101, the Strategic Priority Research Program B of the Chinese Academy of Sciences under Grant No XDB07010200, and the Singapore National Research Foundation under Grant No NRF-RF2013-08. |
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