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Ni(111) Surface State Observed With Scanning Tunneling Microscopy

机译:Ni(111)表面态的扫描隧道显微镜观察

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摘要

A high-resolution spectroscopy study of the electronic structure of the Ni(111) surface by scanning tunneling microscopy is presented. From the standing-wave pattern the electron dispersion of the surface state is determined using Fourier transform methods and compared with previous photoemission data. The dispersion parameters are found to change over a length scale of 30 nm whereas two dispersions with different binding energies but the same effective mass are found. The shifted dispersions could be resolved simultaneously at certain regions of the open terrace showing a splitting of the surface state by △E=60± 15 meV.
机译:提出了通过扫描隧道显微镜对Ni(111)表面电子结构的高分辨率光谱研究。使用傅立叶变换法从驻波图确定表面态的电子色散,并将其与先前的光发射数据进行比较。发现分散体参数在30nm的长度尺度上变化,而发现具有不同结合能但有效质量相同的两种分散体。转移的色散可以在开放平台的某些区域同时解析,显示出表面状态分裂为△E = 60±15 meV。

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