Band mapping in x-ray photoelectron spectroscopy: An experimental and theoretical study of W(110) with 1.25 keV excitation
Band mapping in x-ray photoelectron spectroscopy: An experimental and theoretical study of W(110) with 1.25 keV excitation
复制标题
X 射线光电子能谱中的能带映射：1.25 keV 激发下 W(110) 的实验和理论研究
DOI：
10.1103/physrevb.84.045433
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发表时间：
2011
影响因子：
3.7
通讯作者：
C. Fadley
中科院分区：
文献类型：
--
作者：
C. Papp;L. Plucinski;J. Minár;J. Braun;H. Ebert;C. Schneider;C. Fadley
Angle-resolved photoemission spectroscopy (ARPES) has generally been carried out at energies below ∼ 150 eV, but there is growing interest in going to higher energies so as to achieve greater bulk sensitivity. To this end, we have measured ARPES spectra from a tungsten (110) crystal in a plane containing the [100], [110], and [010]directionswithaphotonenergyof1253.6eV.Theexperimentaldataarecomparedtofree-electronfinal-state calculations in an extended zone scheme with no inclusion of matrix elements, as well as highly accurate one-step theory including matrix elements. Both models provide further insight into such future higher-energy ARPES measurements. Special effects occurring in a higher-energy ARPES experiment, such as photon momentum, phonon-induced zone averaging effects, and the degree of cryogenic cooling required are discussed, together with qualitative predictions via appropriate Debye-Waller factors for future experiments with a number of representative elements being presented.
