Development of high-resolution photon detector for inverse-photoemission spectroscopy

用于反光电子能谱的高分辨率光子探测器的开发

• 批准号: 05554007
• 负责人: TANIGUCHI Masaki
• 金额: $ 3.07万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05554007/
• 关键词: inverse-photoemission spectroscopy; photoemission spectroscopy; unoccupied state; density of states; electronic states

Characteristics of the bandpass-type photon detector for inverse-photoemission spectroscopy has been significantly improved not only with respect to the full width at half maximum, but also in terms of the sensitivity. The new detector has a full width at half maximum of 0.36 eV and the sensitivity is improved by a foctor of 1.6.The overall energy resolution of the inverse-photoemission spectrometer consisting of an electron gun with a BaO cathode and the new detector has been estimated to be 0.44 eV using polycrystalline gold, which is assumed to have a step-like density of states near the Fermi level.The newly developed detector in the present study has been successfully used in studies of unoccupied electronic states in diluted magnetic semiconductors, amorphous semiconductors and magnetic materials.

用于逆光电发射光谱的带通型光子探测器的特性不仅在半峰全宽方面，而且在灵敏度方面都得到了显著改善。新探测器的半高宽为0.36eV，灵敏度提高了1.6倍。用多晶金作探测器，由BaO阴极电子枪和新探测器组成的逆光电能谱仪的总能量分辨率估计为0.44eV。该探测器在费米能级附近具有阶跃态密度，已成功地用于稀磁半导体中未占电子态的研究，非晶半导体和磁性材料。

项目成果

Y.Ueda, H.Sato, M.Tanighchi, N.Happo, T.Mihara, H.Namatame, T.Mizokawa and A.Fujimori: "Mn3d states in NiAs-type MnTe studied by means of synchrotron radiation photoemission" J.Phys.Condens.Matter. 6. 8607-8612 (1994)

Y.Ueda、H.Sato、M.Tanighchi、N.Happo、T.Mihara、H.Namatame、T.Mizokawa 和 A.Fujimori：“通过同步辐射光电发射研究 NiAs 型 MnTe 中的 Mn3d 态” J.

生天目 博文,谷口 雅樹: "逆光電子分光" 表面科学. 15. 507-512 (1994)

Hirofumi Namatenmoku、Masaki Taniguchi：“逆光电子能谱”表面科学 15. 507-512 (1994)。

K.Yokoyama,K.Nishihara,K.Mimuro Y.Hori,and M.Taniguchi: "Bandpass photor detector for inacerae photoemission spectroscopy" Review of Scientific Inastruments. 64. 87-90 (1993)

K.Yokoyama、K.Nishihara、K.Mimuro Y.Hori 和 M.Taniguchi：“用于 inacerae 光电发射光谱的带通光电探测器”科学仪器评论。

N. Happo, H. Sato, K. Mimura, S. Hosokawa, M. Taniguchi, Y. Ueda and M. Koyama: "d4 identification for satellite in the Mn 3d photoemission spectra of Cd1-xMnxTe alloys" Phys. Rev.B50. 12211-12214 (1994)

N. Happo、H. Sato、K. Mimura、S. Hosokawa、M. Taniguchi、Y. Ueda 和 M. Koyama：“Cd1-xMnxTe 合金 Mn 3d 光发射光谱中卫星的 d4 识别” Phys。

M. Taniguchi, M. Tamura, Y. Hari, H. Sato, M, Nakatake, H. Namatame. S. Hosokawa and Y. Ueda: "Photoemission and inverse-photoemission study of trigonal Te." J. Phys. :Condens. Matter. 6. 5181-5188 (1994)

M. Taniguchi、M. Tamura、Y. Hari、H. Sato、M、Nakatake、H. Namatame。