Final-state effects in high-resolution angle-resolved photoemission from Ni(110)
Final-state effects in high-resolution angle-resolved photoemission from Ni(110)
复制标题
Ni(110) 高分辨率角分辨光电子发射的终态效应
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
L. Patthey
中科院分区：
文献类型：
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作者：
X. Cui;E. Krasovskii;V. Strocov;A. Hofmann;J. Schäfer;R. Claessen;L. Patthey
从铁磁单晶Ni（110）表面测量了具有偏振同步辐射的角分辨光发射。讨论了体布里色带高对称线$ensuremath{Gamma} ext{-K-X}$上光谱结构与${mathbf{k}}_{ensuremath{parallel}}$的偏振依赖性和色散。在一步光发射理论中进行从头计算，揭示了所观察到的结构与初始和最终状态的关系。光发射强度的能量-动量分布依赖于光偏振和实验几何结构，用价带态相对于晶体镜面的奇偶对称来解释。
Angle-resolved photoemission with polarized synchrotron radiation is measured from a ferromagnetic single-crystal Ni(110) surface. Polarization dependence and dispersion with ${mathbf{k}}_{ensuremath{parallel}}$ of spectral structures along the high-symmetry lines $ensuremath{Gamma} ext{-K-X}$ of the bulk Brillouin zone is discussed. An ab initio calculation within the one-step theory of photoemission reveals the relation of the observed structures to initial and final states. The energy-momentum distribution of photoemission intensity depending on the light polarization and experimental geometry is explained in terms of even and odd symmetry of the valence-band states with respect to the crystal mirror plane.