Direct observation of nano-domain by structural phase-transition of thallium compounds
| Project/Area Number |
17K06357
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Chiba Institute of Technology |
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Principal Investigator |
WAKITA KAZUKI 千葉工業大学, 工学部, 教授 (80201151)
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| Co-Investigator(Kenkyū-buntansha) |
沈 用球 大阪府立大学, 工学(系)研究科(研究院), 准教授 (20336803)
三村 功次郎 大阪府立大学, 工学(系)研究科(研究院), 准教授 (40305652)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | タリウム化合物 / ナノドメイン / 走査型プローブ顕微鏡 / 自発分極 / 構造相転移 / タリウム系化合物 / ナノ変調構造 / 直接観測 |
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| Outline of Final Research Achievements |
We observed a nano-domain of thallium-based compounds due to spontaneous polarization that appears as a commensurate phase with a Kelvin probe microscope by means of a structural phase transition at low temperature. However, we haven't obtained firm evidence.
In addition, we constructed a chip-enhanced spectroscopy system using plasmon resonance, which is a form of a near-field microscope, observed the heterogeneous CuS2 phase in the Cu4ZnSnS4 thin films, and succeeded in observing the heterogeneous phase with a resolution of about 10 nm. Furthermore, the temperature change of the electronic state of the thallium-based compound was also measured by the ellipsometry method, and the phenomenon that seems to be due to the structural phase transition was found.
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| Academic Significance and Societal Importance of the Research Achievements |
ケルビンプローブ顕微鏡を用いることにより自発分極による結晶中のナノドメインの観測方法について指針を得ることができた。また、第一原理計算法によりコメンシュレート（C）相、インコメンシュレート（IC）相におけるナノ変調構造をとる原因についてその原因の可能性について提案している。またそれぞれの相の境界における電子状態の観測法としてエリプソメトリーを提示している。さらに、ナノ領域の物性評価法としてチップ増強ラマンの可能性を示している。
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Report
(4 results)
Research Products
(62 results)
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[Journal Article] Infrared spectroscopic ellipsometry and optical spectroscopy of plasmons in classic 3D topological insulators2019
Author(s)
Nazim T. Mamedov, Elvin H. Alizade, Zakir A. Jahangirli, Ziya S. Aliev, Nadir A. Abdullayev, Samir N. Mammadov, Imamaddin R. Amiraslanov, Yong-Gu Shim, Kazuki Wakita, Sadiyar S. Ragimov, Ayaz I. Bayramov, Mahammad B. Babanly, Alexander M. Shikin, and Evgueni V. Chulkov
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Journal Title
Journal of Vacuum Science & Technology B
Volume: 37
Issue: 6
Pages: 062602-062602
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] 第1原理計算による TlBr の電子状態解析2019
Author(s)
石川 真人,中山 隆史,脇田 和樹，沈 用球,ナジム.マメドフ,小野寺 敏幸
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Journal Title
令和元年度 応用物理学会 多元系化合物・太陽電池研究会 年末講演会 成果報告集
Volume: 23
Pages: 1-5
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Synthesis, Powder X-Ray Diffraction, and Ab Initio Study of TlInSe2: Analysis of Its Thermoelectric Properties2019
Author(s)
Yurii M. Chumakov, Mehmet Fatih Mintas, Imameddin R. Amiraslanov, S Sebastian Volz, Samir N. Mammadov, Nazim T. Mamedov, Tofig G. Mammadov, Masato Ishikawa, Kazuki Wakita, and MirHasan Yu. Seyidov
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Journal Title
Phys. Status Solidi A
Volume: 216
Issue: 15
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Electronic states of CeT2X20 (T:transition metal, X=Zn and Cd)2018
Author(s)
Yusuke Hirose, Yoshitaka Suzuki, Fuminori Honda, Ruta Kulkarni, Arumugam Thamizhavel, Naomi Kawamura, Masaichiro Mizumaki, Ryohei Simokasa, Kojiro Mimura, Hiroshi Doto, and Rikio Settai
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Journal Title
AIP Advances
Volume: 8
Issue: 11
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Electronic band structure of YbCdCu 4 studied by angle-resolved photoemission spectroscopy2018
Author(s)
Hiroto Shiono, Suzuna Ishihara, Kojiro Mimura, Hitoshi Sato, Eike F. Schwier, Kenya Shimada, Masaki Taniguchi, Shin-ichiro Ideta, Kiyohisa Tanaka, Tao Zhuang, Keisuke T. Matsumoto, Koichi Hiraoka, and Hiroaki Anzai
Organizer
International Conference on Synchrotron Radiation Instrumentation
Related Report
Int'l Joint Research
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[Presentation] YbL3 Resonant Hard X-Ray Photoemission Spectroscopy of Valence Transition Compound YbInCu2018
Author(s)
K. Maeda, H. Sato, Y. Akedo, T. Kawabata, K. Abe, R. Shimokasa, A. Yasui, M. Mizumaki, N. Kwamura, E. Ikenaga, S. Tsutsui, K. Matsumoto, K. Hiraoka, and K. Mimura
Organizer
International Workshop on Trends in Advanced Spectroscopy in Materials Science
Related Report
Int'l Joint Research
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