title: Experimental Observation of Anisotropic Adler-Bell-Jackiw Anomaly in Type-II Weyl Semimetal WTe_{1.98} Crystals at the Quasiclassical Regime.
abstract: The asymmetric electron dispersion in type-II Weyl semimetal theoretically hosts anisotropic transport properties. Here, we observe the significant anisotropic Adler-Bell-Jackiw (ABJ) anomaly in the Fermi-level delicately adjusted WTe_{1.98} crystals. Quantitatively, C_{W}, a coefficient representing the intensity of the ABJ anomaly along the a and b axis of WTe_{1.98} are 0.030 and 0.051  T^{-2} at 2 K, respectively. We found that the temperature-sensitive ABJ anomaly is attributed to a topological phase transition from a type-II Weyl semimetal to a trivial semimetal, which is verified by a first-principles calculation using experimentally determined lattice parameters at different temperatures. Theoretical electrical transport study reveals that the observation of an anisotropic ABJ along both the a and b axes in WTe_{1.98} is attributed to electrical transport in the quasiclassical regime. Our work may suggest that electron-doped WTe_{2} is an ideal playground to explore the novel properties in type-II Weyl semimetals.
authors.affiliation: 1National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China.
authors.forename: Yang-Yang
authors.initials: YY
authors.lastname: Lv
authors.affiliation: National Laboratory of Solid State Microstructures & Department of Physics, Nanjing University, Nanjing, Jiangsu 210093, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Li
authors.affiliation: 1National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China.
authors.forename: Bin-Bin
authors.initials: BB
authors.lastname: Zhang
authors.affiliation: National Laboratory of Solid State Microstructures & Department of Physics, Nanjing University, Nanjing, Jiangsu 210093, China.
authors.forename: W Y
authors.initials: WY
authors.lastname: Deng
authors.affiliation: 1National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China.
authors.forename: Shu-Hua
authors.initials: SH
authors.lastname: Yao
authors.affiliation: National Laboratory of Solid State Microstructures & Department of Physics, Nanjing University, Nanjing, Jiangsu 210093, China.
authors.forename: Y B
authors.initials: YB
authors.lastname: Chen
authors.affiliation: 1National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhou
authors.affiliation: 1National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China.
authors.forename: Shan-Tao
authors.initials: ST
authors.lastname: Zhang
authors.affiliation: 1National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China.
authors.forename: Ming-Hui
authors.initials: MH
authors.lastname: Lu
authors.affiliation: High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui 230031, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing, Jiangsu 210093, China.|High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui 230031, China.
authors.forename: Mingliang
authors.initials: M
authors.lastname: Tian
authors.affiliation: National Laboratory of Solid State Microstructures & Department of Physics, Nanjing University, Nanjing, Jiangsu 210093, China.|Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing, Jiangsu 210093, China.
authors.forename: L
authors.initials: L
authors.lastname: Sheng
authors.affiliation: 1National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China.|Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing, Jiangsu 210093, China.
authors.forename: Yan-Feng
authors.initials: YF
authors.lastname: Chen