Tunneling electron deposition of crytal metal oxides

• Project/Area Number: 26600087
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Crystal engineering
• Research Institution: Kyushu University
• Principal Investigator: Watanabe Yukio 九州大学, 理学研究院, 教授 (40274550)
• Co-Investigator(Renkei-kenkyūsha): KAKU Shigeru 東京工業大学, 理工学研究科, 助教 (80583137)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 表面 / ナノ構造 / 強誘電体 / 第一原理計算 / ナノ接近 / ヘテロ構造

Outline of Final Research Achievements

To form integrated nano-structures of metal oxide materials, we propose a new method, which uses tunneling electron.

Research Products

• [Journal Article] BaTiO3 Polar Surface in Ultrahigh Vacuum Calculated by Local Density Functional Theory with a Large Supercell (2018)
  • Author(s): Y. Watanabe
  • Journal Title: Ferroelectrics (掲載可) Volume: 533-535 予定
  • Peer Reviewed
• [Journal Article] Calculation of strained BaTiO3 with different exchange correlation functionals examined with criterion by Ginzburg-Landau theory, uncovering expressions by crystallographic parameters (2018)
  • Author(s): Y. Watanabe
  • Journal Title: Journal of Chemical Physics (掲載可) Volume: 不明
  • NAID: 120006629783
  • Peer Reviewed
• [Journal Article] SrTiO3 under strain and AFD revisited with multiple exchange-correlation functionals suggesting ferroelectric-paraelectric inhomogeneity (2018)
  • Author(s): Y. Watanabe
  • Journal Title: Ferro2018 Extended abstract Volume: 2018 Pages: 40-41
• [Journal Article] Efficacy of energy functionals for ab initio calculations of strained BaTiO3 examined by GL theory (2018)
  • Author(s): Y. Watanabe
  • Journal Title: Ferro2018 Extended abstract Volume: 2018 Pages: 134-135
• [Journal Article] Novel Electrical Conduction of Insulators under Examination of Defects and Injection and Relationship to Theories of Ferroelectric Domains (2014)
  • Author(s): Y. Watanabe, Y. Urakami, D. Matsumoto, S. Kaku, S.-W. Cheong, G. A. Thomas and S. Miyauchi
  • Journal Title: MRS Proceedings (mrss14-1674-j02-06) Volume: 1674 Pages: 1-12
  • DOI: 10.1557/opl.2014.686
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Proper Permittivity for Depolarization Field in Perfectly Insulating Ferroelectric and Examination of Background Permittivity (2014)
  • Author(s): Y. Watanabe
  • Journal Title: Ferroelectrics Volume: 461 Issue: 1 Pages: 38-43
  • DOI: 10.1080/00150193.2014.889540
  • Peer Reviewed
• [Presentation] SrTiO3 under strain and AFD revisited with multiple exchange-correlation functionals suggesting ferroelectric-paraelectric inhomogeneity (2018)
  • Author(s): Y. Watanabe
  • Organizer: Fundamental Physics of Ferroelectrics
  • Int'l Joint Research
• [Presentation] Efficacy of energy functionals for ab initio calculations of strained BaTiO3 examined by GL theory (2018)
  • Author(s): Y. Watanabe
  • Organizer: Fundamental Physics of Ferroelectrics
  • Int'l Joint Research
• [Presentation] Polarization-Discontinuity Conductions at Domain Boundaries, Interfaces & Surfaces（今年5月予定） (2018)
  • Author(s): Y. Watanabe, D. Matsumoto, Y. Urakami and M. Okano
  • Organizer: 2018 ISAF-FMA-AMF-AMEC-PFM Joint Conference
  • Int'l Joint Research / Invited
• [Presentation] Unification of conductions at domain-boundaries, SrTiO3/LaAlO3 and free surface for Size Effect and Domain Theories (2018)
  • Author(s): Y. Watanabe, D. Matsumoto, Y. Urakami, S.W. Cheog and M. Okano
  • Organizer: E-MRS Fall Meeting (欧州材料学会)
  • Int'l Joint Research / Invited
• [Presentation] Natural domains of BaTiO3 in ultra-high vacuum, air & acid: properties & invariant domain-size proving intrinsic screening & a Review of polarization induced conduction (2017)
  • Author(s): Y. Watanabe, H. Nakahara, S. Kaku, D. Matsumoto, S.W. Cheong
  • Organizer: The 14th International Meeting on Ferroelectricity, IMF2017
  • Int'l Joint Research / Invited
• [Presentation] Polarization Induced Conduction and Screening (2017)
  • Author(s): Y. Watanabe
  • Organizer: New Jersey Institute of Technology
  • Invited
• [Presentation] Novel Electrical Conduction of Insulators under Examination of Defects and Injection and Relationship to Theories of Ferroelectric Domains (2014)
  • Author(s): Y. Watanabe, Y. Urakami, D. Matsumoto, S. Kaku, S.-W. Cheong, G. A. Thomas and S. Miyauch
  • Organizer: MRS Spring Meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2014-04-05 – 2014-04-25
  • Invited
• [Remarks] 研究者情報
  • URL: http://hyoka.ofc.kyushu-u.ac.jp/search/details/K002204/index.html
• [Remarks] 量子微小物性A
  • URL: http://www.sci.kyushu-u.ac.jp/e/departments/phys/labo/quantum.html#quantum-a
• [Patent(Industrial Property Rights)] 金属化合物を含むヘテロ接合を有する構造体 (2015)
  • Inventor(s): 渡部行男 加来滋
  • Industrial Property Rights Holder: 渡部行男 加来滋
  • Industrial Property Rights Type: 特許
  • Filing Date: 2015-12-24
  • Acquisition Date: 2016-04-21
• [Patent(Industrial Property Rights)] 特願2014-259711、金属化合物を含むヘテロ接合を有する構造体 (2014)
  • Inventor(s): 渡部、加来
  • Industrial Property Rights Holder: 渡部、加来
  • Industrial Property Rights Type: 特許
  • Filing Date: 2014-12-24
  • Acquisition Date: 2016-03-01
• [Patent(Industrial Property Rights)] 金属化合物を含むヘテロ接合を有する構造 (2014)
  • Inventor(s): 渡部、加来
  • Industrial Property Rights Holder: 渡部、加来
  • Industrial Property Rights Type: 特許
  • Filing Date: 2014-12-25