Magnetic and magnetotransport properties of layered TaCoTe_(2) single crystals  

作　　者：梅明 陈正 聂勇 王园园 朱相德 宁伟 田明亮 Ming Mei;Zheng Chen;Yong Nie;Yuanyuan Wang;Xiangde Zhu;Wei Ning;Mingliang Tian(Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions,High Magnetic Field Laboratory,HFIPS,Anhui,Chinese Academy of Sciences,Hefei 230031,China;Department of Physics,University of Science and Technology of China,Hefei 230031,China;School of Physics,Anhui University,Hefei 230601,China)

机构地区：[1]Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions,High Magnetic Field Laboratory,HFIPS,Anhui,Chinese Academy of Sciences,Hefei 230031,China [2]Department of Physics,University of Science and Technology of China,Hefei 230031,China [3]School of Physics,Anhui University,Hefei 230601,China

出　　处：《Chinese Physics B》2023年第12期524-527,共4页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China (Grant No.2021YFA1600201);the National Natural Science Foundation of China (Grant Nos.U19A2093,U2032214,and U2032163);Collaborative Innovation Program of Hefei Science Center,CAS (Grant No.2019HSC-CIP 001);Youth Innovation Promotion Association of CAS (Grant No.2021117);the HFIPS Director’s Fund (Grant No.YZJJQY202304);the CASHIPS Director’s Fund (Grant No.E26MMG71131);supported by the High Magnetic Field Laboratory of Anhui Province。

摘　　要：We present the synthesis of TaCoTe_(2) single crystals and a systematic investigation of the physical properties of bulk crystals and thin flakes.The crystal shows a semiconducting behavior with temperature decreasing from room temperature and turns to a metallic behavior below 38 K.When the magnetic field is applied,the temperature-dependent resistivity curves show an upturn below 10 K.Furthermore,we find that the TaCoTe_(2) single crystal can be easily exfoliated from the bulk crystal by the micromechanical exfoliation method.Our measurements suggest that the nanoflakes have properties similar to those of the bulk crystal when the thickness is lowered to 18 nm.

关 键 词：two-dimensional materials MAGNETISM electronic transport NANOFLAKES 

分 类 号：O469[理学—凝聚态物理]