Anisotropic transport in a possible quasi-one-dimensional topological candidate:TaNi_(2)Te_(3)  

作　　者：Yi Liu Chun-Qiang Xu Wen-He Jiao Ping-Gen Cai Bin Li Wei Zhou Bin Qian Xue-Fan Jiang Kalaivaman R Raman Sankar Xiang-Lin Ke Guang-Han Cao Xiao-Feng Xu 

机构地区：[1]Department of Applied Physics,Zhejiang University of Technology,Hangzhou 310023,China [2]Department of Physics and Astronomy,Michigan State University,East Lansing,MI 48824-2320,USA [3]School of Physics and Key Laboratory of MEMS of the Ministry of Education,Southeast University,Nanjing 211189,China [4]Department of Physics,Zhejiang University of Science and Technology,Hangzhou 310023,China [5]New Energy Technology Engineering Laboratory of Jiangsu Province and School of Science,Nanjing University of Posts and Telecommunications,Nanjing 210023,China [6]Department of Physics,Changshu Institute of Technology,Changshu 215500,China [7]Institute of Physics,Academia Sinica,Taipei 11529,China [8]Department of Physics,Zhejiang University,Hangzhou 310027,China

出　　处：《Tungsten》2023年第3期325-331,共7页钨科技（英文）

基　　金：financially supported by the National Natural Science Foundation of China (Grant Nos. 11974061, U1732162, and U1832147);the financial support from the Zhejiang Provincial Natural Science Foundation of China (Grant No. LY19A040002);NUPTSF (Grant Nos. NY219087 and NY220038);the financial support from the Ministry of Science and Technology in Taiwan,China under Project MOST-108-2112-M-001-049-MY2;Academia Sinica for the budget of ASi MATE-109-13;financial support from the start-ups at Michigan State University。

摘　　要：We report on the solid-state synthesis and the strongly anisotropic transport properties of the ternary telluride TaNi_(2)Te_(3),whose three orthogonal resistivity coefficients exhibit a large ratio of 1.4:1:2294(14:1:2303) at 300 K(2 K),thereby demonstrating its quasi-one-dimensional(q1D) electronic structure.The Kohler’ s rule in different current/field configurations shows a moderate violation.Its one dimensionality manifests itself in the needle-like shape of crystal,the large anisotropic resistivity and the flat Fermi surface normal to the chain direction.Moreover,the first-principles calculations also provide evidence for the existence of the nontrivial topological carriers in this q1D system.Our calculation demonstrates that TaNi_(2)Te_(3) is a strong topological nontrivial material with topological indices(1;1 0 1) and its nontrivial topology is also evidenced from its bulk-surface correspondence.Our study may therefore offer a new platform for engineering the topologically nontrivial phase in low-dimensional materials,in analogy to the recently discovered q1D topological TaNiTe_(5).

关 键 词：Topological materials-Quasi-one-dimensionality TELLURIDE 

分 类 号：TQ135.13[化学工程—无机化工]