表面科学
Online ISSN : 1881-4743
Print ISSN : 0388-5321
ISSN-L : 0388-5321
特集:最先端の光電子分光
レーザーによるマイクロビーム顕微光電子分光
宗像 利明杉山 武晴
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2005 年 26 巻 12 号 p. 729-733

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We have developed a laser-based photoemission microspectrometer which achieved an energy resolution of < 30 meV and a lateral resolution of 0.3 μm. The light source was fs-coherent radiation at a wavelength of 140 nm (8.9 eV). The images based on the intensity of the Shockley-surface-state feature clearly showed that many crystalline grains with (111) surfaces were formed on a polycrystalline copper plate. The high-energy-resolution spectroscopy allows detailed insights on the nm-scale morphology. Another feature of the spectrometer is the measurement of unoccupied states by employing time-resolved two-photon photoemission. Surface images based on the unoccupied image-potential state were successfully measured. We have applied the spectrometer to copper phthalocyanine films grown on a polycrystalline copper substrate. The results demonstrate that a large inhomegeneity exists in the interface electronic structure.

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この記事はクリエイティブ・コモンズ [表示 - 非営利 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by-nc/4.0/deed.ja
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