Observation of Weak Anti-Localization and Electron-Electron Interaction on Few-Layer 1T′-MoTe2 Thin Films  

作　　者：王钦 于鹏 黄祥威 樊洁 景秀年 姬忠庆 刘政 刘广同 杨昌黎 吕力 

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics, Institute of Physics,Chinese Academy of Sciences [2]University of Chinese Academy of Sciences [3]School of Materials Science and Engineering, Nanyang Technological University [4]Collaborative Innovation Center of Quantum Matter

出　　处：《Chinese Physics Letters》2018年第7期95-98,共4页中国物理快报（英文版）

基　　金：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;the Singapore National Research Foundation under Grant No NRF-RF2013-08

摘　　要：Electronic transports of few-layer 1T＇-MoTe2 films are measured at temperatures down to 0.26 K. The lowtemperature 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 α≈-0.5 and lφ∝ T-0 5. The logarithmic temperature dependence has a positive slope κ≈0.75, 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.Electronic transports of few-layer 1T＇-MoTe2 films are measured at temperatures down to 0.26 K. The lowtemperature 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 α≈-0.5 and lφ∝ T-0 5. The logarithmic temperature dependence has a positive slope κ≈0.75, 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.

分 类 号：O484[理学—固体物理]