论文标题
thpd $ _2 $ al $ _3 $的电子结构：U $ 5F $状态在upd $ _2 $ al $ _3 $的电子结构中的影响
Electronic Structure of ThPd$_2$Al$_3$: an impact of the U $5f$ states in the electronic structure of UPd$_2$Al$_3$
论文作者
论文摘要
Potolelectron Spectroscophy研究了THPD $ _2 $ al $ _3 $的电子结构，这是重型费米昂超导体UPD $ _2 $ al $ _3 $的等值范围。 THPD $ _2 $ al $ _3 $的带状结构和费米表面是通过角度分辨的光电光谱（ARPES）获得的，并且基于局部密度近似的带结构计算来很好地解释结果。 ARPES光谱与带构建计算之间的比较表明，Thpd $ _2 $ al $ _3 $的费米表面主要由Al $ 3p $组成，而PD $ 4D $州的较小贡献。 THPD $ _2 $ al $ _3 $和UPD $ _2 $ al $ _3 $之间的带结构的比较认为，U $ 5F $状态在UPD $ _2 $ _2 $ _2 $ _2 $ _3 $中形成Fermi表面，通过与Al $ 3p $ State in Al layer的杂交中的Fermi Surfiory a fermi $ _2 $ _2 $ _2 $ _3 $ _3 $ _3 $ _3 $ _3 $ _3 $ _3 $ _3 $。
The electronic structure of ThPd$_2$Al$_3$, which is isostructural to the heavy fermion superconductor UPd$_2$Al$_3$, was investigated by photoelectron spectroscopy. The band structure and Fermi surfaces of ThPd$_2$Al$_3$ were obtained by angle-resolved photoelectron spectroscopy (ARPES), and the results were well-explained by the band-structure calculation based on the local density approximation. The comparison between the ARPES spectra and the band-structure calculation suggests that the Fermi surface of ThPd$_2$Al$_3$ mainly consists of the Al $3p$ and Th $6d$ states with a minor contribution from the Pd $4d$ states. The comparison of the band structures between ThPd$_2$Al$_3$ and UPd$_2$Al$_3$ argues that the U $5f$ states form Fermi surfaces in UPd$_2$Al$_3$ through hybridization with the Al $3p$ state in the Al layer, suggesting that the Fermi surface of UPd$_2$Al$_3$ has a strong three-dimensional nature.
