| Project/Area Number |
05554007
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
固体物性Ⅰ(光物性・半導体・誘電体)
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| Research Institution | HIROSHIMA UNIVERSITY |
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Principal Investigator |
TANIGUCHI Masaki Hiroshima University, Faculty of Science, Professor, 理学部, 教授 (10126120)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Hitoshi Hiroshima University, Faculty of Science, Research Associate, 理学部, 助手 (90243550)
NAMATAME Hirofumi Hiroshima University, Faculty of Science, Associate Professor, 理学部, 助教授 (10218050)
HOSOKAWA Shinya Hiroshima University, Faculty of Science, Associate Professor, 理学部, 助教授 (30183601)
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| Project Period (FY) |
1993 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥4,800,000 (Direct Cost: ¥4,800,000)
Fiscal Year 1994: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1993: ¥3,800,000 (Direct Cost: ¥3,800,000)
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| Keywords | inverse-photoemission spectroscopy / photoemission spectroscopy / unoccupied state / density of states / electronic states |
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| Research Abstract |
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.
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