Angle-resolved photoemission study of the Ni(110)(12)-H reconstructed surface at 80 K.
Angle-resolved photoemission study of the Ni(110)(12)-H reconstructed surface at 80 K.
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80 K 下 Ni(110)(12)-H 重建表面的角分辨光发射研究。
DOI：
10.1103/physrevb.36.922
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
Yagi
中科院分区：
文献类型：
--
作者：
Komeda;Sakisaka;Onchi;Kato;Masuda;Yagi
利用同步辐射的角度分辨光发射光谱研究了Ni (110)(1x2)-H重构表面在80k下的电子态。在费米能量（Γ）以下9.0 eV处发现了从Ni体带分离出来的h诱导态。这个H分裂态随着k？在[110]（Γ X）方位角处，而在[001]（Γ Y’）方位角处没有可测量的色散。在k空间中，从Γ到x的本征Ni（110）表面态没有被识别出来。在Γ ~ 2-3 eV处，H吸附显著降低了三维样的Σ - 1-对称体态，表明Ni 3d （Σ 1）态参与了键合。
Angle-resolved photoemission spectroscopy utilizing synchrotron radiation has been used to study the electronic states of the Ni (110)(1× 2)-H reconstructed surface at 80 K. An H-induced state, split off from the Ni bulk bands, is found at 9.0 eV below the Fermi energy at Γ. This H split-off state disperses upwards by 3.1 eV with k? in the [11 0](Γ X) azimuth whereas it exhibits no measurable dispersion in the [001](Γ Y’) azimuth. The intrinsic Ni (110) surface states were not identified along the line in k space from Γ to X. It was found that the 3d-like Σ 1-symmetry bulk states at∼ 2–3 eV at Γ are markedly reduced by H adsorption, indicating that the Ni 3d (Σ 1) states participate in the bonding.