Hein Petra, Jauernik Stephan, Erk Hermann, Yang Lexian, Qi Yanpeng, Sun Yan, Felser Claudia, Bauer Michael
Institute of Experimental and Applied Physics, University of Kiel, Leibnizstr. 19, D-24118 Kiel, Germany.
State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.
J Phys Condens Matter. 2020 May 27;32(34). doi: 10.1088/1361-648X/ab8762.
Laser-based angle-resolved photoemission spectroscopy and two-photon photoemission spectroscopy are employed to study the valence electronic structure of the Weyl semimetal candidate-WTealong two high symmetry directions and for binding energies between ≈ -1 eV and 5 eV. The experimental data show a good agreement with band structure calculations. Polarization dependent measurements provide further information on initial and intermediate state symmetry properties with respect to the mirror plane of thestructure of WTe.
基于激光的角分辨光电子能谱和双光子光电子能谱被用于研究Weyl半金属候选材料-WTe₂沿两个高对称方向以及在约-1电子伏特至5电子伏特结合能范围内的价电子结构。实验数据与能带结构计算结果吻合良好。偏振相关测量提供了关于WTe₂结构镜面的初态和中间态对称性质的更多信息。
