Determination of the rutile-TiO2(110) surface using total-reflection high-energy positron diffraction
| Project/Area Number |
26800170
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics I
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| Research Institution | High Energy Accelerator Research Organization |
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Principal Investigator |
MOCHIZUKI Izumi 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 研究員 (30579058)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 全反射高速陽電子回折 / 表面・界面構造 / チタニア / グラフェン / シリセン / チタニア(110)表面 / 最表面構造解析 |
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| Outline of Final Research Achievements |
By using a high-brightness positron beam at Slow Positron Facility, KEK, we tried (i) to make a new detector which improve a signal-to-noise-ratio (S/N) of TRHEPD patterns experimentally acquired, (ii) to determine the atomic positions of the structure of the rutile-TiO2 (110) (1x2) surface which had been discussed over the past 30 years, and (iii) to determine those of brand-new materials. In this study, we succeeded (i) to make a new detector of which the S/N is 100 times more than that so far, (ii) to clarify the atomic coordinates of the (1×2) surface, and (iii) to settle the inter-layer distances between the topmost silicene or graphene layer and those underlying single-crystal substrates.
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Report
(3 results)
Research Products
(39 results)
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[Presentation] Progress in the research at Slow Positron Facility2016
Author(s)
T. Hyodo, K. Wada, I. Mochizuki, M. Kimura, A. Ichimiya, N. Toge, T. Shidara, Y. Fukaya, M. Maekawa, A. Kawasuso, K. Michishio, Y. Nagashima
Organizer
14th International Workshop on Slow Positron Beam Techniques & Applications
Place of Presentation
くにびきメッセ(島根県松江市)
Year and Date
2016-05-22
Related Report
Int'l Joint Research / Invited
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[Presentation] Ag(111)上シリセンの成長様式2015
Author(s)
川原一晃, 望月出海, 白澤徹郎, 林俊良, 長尾遼, 荒船竜一, 川上直也, 和田健, 塚原規志, 高橋敏男, 兵頭俊夫, 川合眞紀, 高木紀明
Organizer
日本物理学会2015年秋季大会
Place of Presentation
関西大学千里山キャンパス(大阪府吹田市)
Year and Date
2015-09-16
Related Report
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[Presentation] An improved positron diffraction: total-reflection high-energy positron diffraction (TRHEPD) and its applications2015
Author(s)
T. Hyodo, H. Ariga, A, Ichimiya, A. Kawasuso, K. Wada, M. Maekawa, Y. Fukaya, I. Mochizuki, K. Asakura, and T. Shidara
Organizer
European Conference on Surface Science (ECOSS-31)
Place of Presentation
Barcelona(Spain)
Year and Date
2015-08-31
Related Report
Int'l Joint Research
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