A study of electron and spin state of magnetic thin layer grown on negative electron affinity semiconductor
| Project/Area Number |
18560021
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | Kagawa University |
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Principal Investigator |
TAKAHASHI Naoshi Kagawa University, Faculty of Education, Associate Professor (80325307)
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| Co-Investigator(Kenkyū-buntansha) |
MIYAGAWA Hayato Kagawa Univ, Faculty of Engineer, Assistant Professor (00380197)
OHURA Miyuki Kagawa Univ, Faculty of Education, Research Assistant (70346625)
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| Project Period (FY) |
2006 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥3,700,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2006: ¥2,400,000 (Direct Cost: ¥2,400,000)
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| Keywords | surface / interface / semiconductor |
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| Research Abstract |
We tried to investigate electron and spin state, and changing of Fermi level concerning to surface material (for example iron, nickel) and its thickness of ferro-magnetic layer (and/or multi layer), that are grown on semiconductor surface of negative electron affinity (NEA). At first we modified the pumping power of a MBE vacuum chamber by installing ion-pump, and then modified the sample manipulation system. After achieving a good vacuum condition we grew several types of samples with iron and/or Dy and its compound with gallium-arsenide. During the growth we monitored the surface condition with the reflection high electron energy diffraction (RHEED) and after the growth half of samples were checked the x-ray diffraction (XRD) and the transmission electron microscope (TEM). (A part of these work were published) For the rest of samples, we chose amorphous arsenic cap to keep the condition of the surface even after taking out of the vacuum chamber. To investigate the surface electron state and Fermi level, we employed the photoelectron spectroscopy with several photon energy from synchrotron radiation facility in Tosu (Saga Light Centre). Spectrum analysis from these samples is undergoing. Through this work, we established an easy and reliable method of arsenic capping in the MBE chamber, that were also checked by photoelectron spectroscopy because we could see clear evidence of clean surface after removing the arsenic capping layer by heat decapping.
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Report
(3 results)
Research Products
(27 results)
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[Presentation] 色素/チタン酸ナノシート複合薄膜の光学特性2008
Author(s)
岡本太樹, 木村昭博, 馮旗, 中西俊介, 伊藤寛, 高橋尚志, 宣春昇, 鶴町徳昭
Organizer
応用物理学会
Place of Presentation
中部大学
Year and Date
2008-09-02
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] Optical property of Dye/TiO2 nano-sheet2008
Author(s)
T Okamoto, A Kimura, Q Feng, S Nakanishi, H Itoh, N Takahashi, S Cai, N Tsurumachi
Organizer
69^<th> Meeting, The Japan Society of Applied Physics
Place of Presentation
Chube Univ
Year and Date
2008-09-02
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Presentation] MBE Growth of Gadolinium-doped GaAs Structure and magnetic properties of Gd/Fe layer grown by MBE2008
Author(s)
Naoshi Takahashi, Hayato Miyagawa, Hiroyuki Shiraoka, 他, Hayato Miyagawa, Hiroyuki Shiraoka, Michihiro Tani, Shuhei Higuchi, Kensuke Fujii, Naoshi Takahashi, 他
Organizer
International Conference on Molecular Beam Epitaxy 2008
Place of Presentation
Vancouver
Year and Date
2008-08-07
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] MBE Growth of Gadolinium-doped GaAs2008
Author(s)
Naoshi Takahashi, Hayato Miyagawa, Hiroyuki Shiraoka
Organizer
International Conference on Molecular Beam Epitaxy 2008
Place of Presentation
Vancouver
Year and Date
2008-08-07
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Presentation] 色素-チタン酸ナノシート複合体の光学特性 GaAs(001)基板上へのGd/Fe多層膜のMBE成長 MBE法による希薄磁性半導体GaAs : Gdの作製2007
Author(s)
岡本太樹, 木村昭博, 原田幸昌, 馮旗, 中西俊介, 伊藤寛, 鶴町徳昭, 高橋尚志, 白岡裕之, 金堂元紀, 宮川勇人, 藤井健輔, 高橋尚志, ら, 樋口修平, 白岡裕之, 谷理博, 宮川勇人, 小柴俊, 高橋尚志, ら
Organizer
応用物理学会中国四国支部2007年度支部学術講演会
Place of Presentation
岡山大学一般教育棟
Year and Date
2007-08-04
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] Optical property of Dye/TiO2 nano-sheet2007
Author(s)
T Okamoto, A Kimura, Q Feng, S Nakanishi, H Itoh, N Takahashi, S Cai, N Tsurumachi
Organizer
Annual meeting of Chugoku-Shkoku branch of the Japan Society of Applied Physics
Place of Presentation
Okayama
Year and Date
2007-08-04
Description
「研究成果報告書概要(欧文)」より
Related Report
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