The reflection anisotropy spectroscopy of the Au(1 1 0) surface structures in liquid environments.
The reflection anisotropy spectroscopy of the Au(1 1 0) surface structures in liquid environments.
复制标题
液体环境中 Au(1 1 0) 表面结构的反射各向异性光谱。
DOI：
10.1088/0953-8984/27/47/475005
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Weightman P
中科院分区：
文献类型：
--
作者：
Weightman P
在电化学环境中，Au(110)-(1×1)、(1×2)和(1×3)表面结构的反射各向异性(RAS)分布主要是由沿Au(110)表面主轴方向的表面偶极跃迁引起的。在4.0 eV范围内，Au(110)-(1×1)和(1×3)表面的RAS分布有微弱贡献，可能来自表面结构固有的或与台阶有关的(111)面。费米能级上方的表面态的跃迁对(1×2)和(1×3)表面的RAS分布有贡献，但对(1×1)表面的RAS分布没有贡献。Au(110)-(1×1)和(1×2)表面RAS谱在2.5 eV处的一个强特征归因于布里渊区L点附近5d能带和5d能带之间的跃迁
The reflection anisotropy (RAS) profiles of the Au (1 1 0)-(1× 1),(1× 2) and (1× 3) surface structures in electrochemical environments are shown to arise mainly from surface dipole transitions directed along the principal axes of the Au (1 1 0) surface. There are weak contributions to the RAS profiles of the Au (1 1 0)-(1× 1) and (1× 3) surfaces in the region of 4.0 eV which probably arise from (1 1 1) facets that are either intrinsic to the surface structures or are associated with steps. A transition involving a surface state just above the Fermi level, E F, contributes to the RAS profiles of the (1× 2) and (1× 3) surfaces but not to the RAS profile of the (1× 1) surface. A strong feature at 2.5 eV in the RAS profiles of the Au (1 1 0)-(1× 1) and (1× 2) surfaces is attributed to a transition in the vicinity of the L point of the Brillouin zone between the 5d band and the