Method of forming time-reversed LEED states from repeated-slab calculations

Method of forming time-reversed LEED states from repeated-slab calculations
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通过重复板计算形成时间反转 LEED 状态的方法

DOI:
10.1088/1361-648x/abb444
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发表时间:
2020
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
通讯作者:
Kobayashi Katsuyoshi
Kobayashi Katsuyoshi
中科院分区:
--
文献类型:
--
作者:
S. Namba;H. Fujishiro;M.D. Ainslie;T. Naito;and Y. Yanagi;Kobayashi Katsuyoshi

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提出了一种利用重复平板计算结果形成时间反转低能电子衍射(LEED)态的方法。时间反转的LEED状态被用于光电子能谱的矩阵元素的计算。该方法应用于Bi(111)表面的自旋和角度分辨光电子能谱。对线偏振光从表面态激发进行了计算。计算结果再现了自旋平均值作为光偏振角的函数,并解释了实验观察到的强度不对称性。本文还计算了圆偏振光的激发,讨论了具有镜面对称的系统中线偏振光和圆偏振光的自旋期望值之间的关系。
A method of forming time-reversed low-energy electron diffraction (LEED) states using results of repeated-slab calculations is presented. The time-reversed LEED states are used in calculations of the matrix elements of photoelectron spectroscopy. The method is applied to spin-and angle-resolved photoelectron spectroscopy of the Bi (111) surface. Calculations are performed for excitation from surface states by linearly polarized light. Calculated results reproduce spin average values measured as a function of polarization angle of light and explain the intensity asymmetry experimentally observed. Calculations for excitation by circularly polarized light are also performed, and relations of spin expectation values between linear and circularly polarized lights are discussed for systems with mirror symmetry.
用能带理论的线性方法进行表面电子结构
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影响因子: 3.7
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