Td-WTe $_2$的laser和2 PPES联合研究
A combined laser-based ARPES and 2PPES study of Td-WTe$_2$
摘要：
利用激光角分辨光电子能谱（ARPES）和双光子光电子能谱（2 PPES）研究了Weyl半金属候选物Td-WTe $_2$在两个高对称方向上的价电子结构，结合能在$\approx$-1 eV和5 eV之间.实验数据与能带结构计算结果吻合较好。偏振相关的测量提供了进一步的信息，初始和中间状态对称性相对于WTe $_2$的Td结构的镜面。
英文摘要：
Laser-based angle-resolved photoemission spectroscopy (ARPES) and two-photon photoemission spectroscopy (2PPES) are employed to study the valence electronic structure of the Weyl semimetal candidate Td-WTe$_2$ along two high symmetry directions and for binding energies between $\approx$ -1 eV and 5 eV. The experimental data show a good agreement with band structure calculations. Polarization dependent measurements provide furthermore information on initial and intermediate state symmetry properties with respect to the mirror plane of the Td structure of WTe$_2$.
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