论文标题
异常光谱演化，BIPD中具有大量灵敏度
Anomalous spectral evolution with bulk sensitivity in BiPd
论文作者
论文摘要
我们使用光发射光谱法研究了非中心对称超导体的电子结构，其具有从紫外线到硬X射线的多个光子能量。实验数据在该系统的表面和散装电子结构上表现出有趣的差异。虽然表面BI核心水平峰出现在较低的结合能，但在散装价带的较高结合能侧发现了表面价带的特征。价带主要由PD 4D状态构成。电子结构中的这些变化无法通过电荷转移来解释成分元素的离子性变化。对实验数据的分析表明，BI-PD杂交物理学在得出该系统的异常光谱演化和电子特性方面起着关键作用。
We investigate the electronic structure of a noncentrosymmetric superconductor, BiPd using photoemission spectroscopy with multiple photon energies ranging from ultraviolet to hard x-ray. Experimental data exhibit interesting difference in the surface and bulk electronic structures of this system. While the surface Bi core level peaks appear at lower binding energies, the surface valence band features are found at the higher binding energy side of the bulk valence band; valence band is primarily constituted by the Pd 4d states. These changes in the electronic structure cannot be explained by the change in ionicity of the constituent elements via charge transfer. Analysis of the experimental data indicates that the Bi-Pd hybridization physics plays the key role in deriving the anomalous spectral evolution and the electronic properties of this system.
