Fabrication of Conductive Quantum Wires based on Dislocation Technology

• Project/Area Number: 24656376
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Inorganic materials/Physical properties
• Research Institution: Tohoku University
• Principal Investigator: WANG Zhongchang 東北大学, 原子分子材料科学高等研究機構, 准教授 (20510548)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 量子細線 / 電子顕微鏡 / 転位 / 結晶界面

Research Abstract

The sigma 5 (310)[001] MgO bicrystal was used as model system. Analyses of microstructure and electronic state near the boundary were performed based on an aberration corrected scanning transmission electron microscopy (STEM).The high angular annular dark field image in STEM showed formation of well-contacted atomically flat interface and also impurities segregation at or near the boundary. Ca and Ti impurities were detected at or near the boundary. The location of Ca and Ti atoms were examined by using atomic resolution elemental mapping. The elemental mapping revealed that the Ca atoms are localized only at the boundary, but Ti atoms form atomic wires along the neighboring sites of Ca. The theoretical calculation showed that Ti atomic wire induces semi conducing behavior in MgO insulator.

Research Products

• [Journal Article] Polymorphism of Dislocation Core Structures at the Atomic Scale (2014)
  • Author(s): Z. C. Wang, M. Saito, K. P. McKenna, and Y. Ikuhara
  • Journal Title: Nature Communications Volume: 5
  • Peer Reviewed
• [Journal Article] Polymorphism of Dislocation Core Structures at the Atomic Scale (2014)
  • Author(s): Z. C. Wang*, M. Saito, K. P. McKenna, and Y. Ikuhara
  • Journal Title: Nature Communications Volume: 5 Issue: 1
  • DOI: 10.1038/ncomms4239
  • Peer Reviewed / Open Access
• [Journal Article] Fluorine in Shark Teeth: Its Direct Atomic-Resolution Imaging and Strengthening Function (2014)
  • Author(s): C. L. Chen, Z. C. Wang*, M. Saito, T. Tohei, Y. Takano, and Y. Ikuhara
  • Journal Title: Angewandte Chemie International Edition Volume: 126 Issue: 6 Pages: 1569-1573
  • DOI: 10.1002/ange.201307689
  • Peer Reviewed
• [Journal Article] Spontaneous Structural Distortion and Quasi-One-Dimensional Quantum Confinement in a Single-Phase Compound (2013)
  • Author(s): Z. C. Wang, L. Gu, M. Saito, S. Tsukimoto, M. Tsukada, F. Lichtenberg, Y. Ikuhara, and J. G. Bednorz
  • Journal Title: Advanced Materials Volume: 25
  • Peer Reviewed
• [Journal Article] Ferromagnetic Dislocations in Antiferromagnetic NiO (2013)
  • Author(s): I. Sugiyama, N. Shibata, Z. C. Wang, S. Kobayashi, T. Yamamoto, and Y. Ikuhara
  • Journal Title: Nature Nanotechnology Volume: 8
  • Peer Reviewed
• [Journal Article] Fluorine in Shark Teeth : Its Direct Atomic-Resolution Imaging and Strengthening Function (2013)
  • Author(s): C. L. Chen, Z. C. Wang, M. Saito, T. Tohei, Y. Takano, and Y. Ikuhara
  • Journal Title: Angewandte Chemie International Edition Volume: 126
  • Peer Reviewed
• [Journal Article] Spontaneous Structural Distortion and Quasi-One-Dimensional Quantum Confinement in a Single-Phase Compound (2013)
  • Author(s): ZC. Wang, L. Gu, M. Saito, S. Tsukimoto, M. Tsukada, F. Lichtenberg, Y. Ikuhara, JG Bednorz
  • Journal Title: Advanced Materials Volume: 25[2] Issue: 2 Pages: 218-222
  • DOI: 10.1002/adma.201203134
  • Peer Reviewed
• [Journal Article] Regulating Infrared Photoresponses in Reduced Graphene Oxide Phototransistors by Defect and Atomic Structure Control (2013)
  • Author(s): H. X. Chang, Z. H. Sun, M. Saito, Q. H. Yuan, H. Zhang, J. H. Li, Z. C. Wang, T. Fujita, F. Ding, Z. J. Zheng, F. Yan, H. K. Wu, M. W. Chen, and Y. Ikuhara
  • Journal Title: ACS NANO Volume: 7 Issue: 7 Pages: 6310-6320
  • DOI: 10.1021/nn4023679
  • Peer Reviewed
• [Journal Article] Ferromagnetic dislocations in antiferromagnetic NiO (2013)
  • Author(s): I. Sugiyama, N. Shibata, Z. Wang, S. Kobayashi, T. Yamamoto and Y. Ikuhara
  • Journal Title: Nature Nanotechnology Volume: 8 Issue: 4 Pages: 266-270
  • DOI: 10.1038/nnano.2013.45
  • Peer Reviewed / Open Access
• [Journal Article] Terraces at ohmic contact in SiC electronics: Structure and electronic states (2012)
  • Author(s): ZC. Wang, M. Saito, S. Tsukimoto, Y. Ikuhara
  • Journal Title: Journal of Applied Physics Volume: 111(11) Issue: 11 Pages: 113717-113717
  • DOI: 10.1063/1.4729074
  • Peer Reviewed
• [Journal Article] Structural and electronic impact of SrTiO3 substrate on T1O2 thin films (2012)
  • Author(s): ZC. Wang, R. Sun, CL Chen, M. Saito, S. Tsukimoto, Y. Ikuhara
  • Journal Title: Journal of Materials Science Volume: 47(13) Issue: 13 Pages: 5148-5157
  • DOI: 10.1007/s10853-012-6392-4
  • Peer Reviewed
• [Presentation] Atomic and Chemical Analysis of Interfaces and Grain Boundaries in Functional Materials (2014)
  • Author(s): Z. C. Wang
  • Organizer: Energy Materials Nanotechnology Spring Meeting
  • Place of Presentation: Las Vegas,NV, USA
  • Year and Date: 2014-02-28
  • Invited
• [Presentation] Atomic and Chemical Analysis of Interfaces and Grain Boundaries in Functional Materials (2014)
  • Author(s): Z. C. Wang, M. Saito, Y. Ikuhara
  • Organizer: 2014 EMN Spring Meeting
  • Place of Presentation: Las Vegas, Nevada, USA,
  • Invited
• [Presentation] Atom-by-atom Structural and Electronic Analysis of Interfaces and Grain Boundaries in Electronic Materials (2013)
  • Author(s): Z. C. Wang
  • Organizer: AIMR/UCL Materials Workshop
  • Place of Presentation: London,UK
  • Year and Date: 2013-11-21
  • Invited
• [Presentation] Atom-Resolved Imaging of Grain Boundary Complex Superstructures in Polycrystalline Materials (2013)
  • Author(s): Z. C. Wang
  • Organizer: Nan Hua University, Hengyang
  • Place of Presentation: Hunan, China
  • Year and Date: 2013-11-17
  • Invited
• [Presentation] Atom-by-atom Analysis of Functional Ceramics Interfaces (2013)
  • Author(s): Z. C. Wang, M. Saito, Y. Ikuhara
  • Organizer: Materials Science & Technology
  • Place of Presentation: Montreal, Quebec, Canada
  • Year and Date: 2013-10-30
  • Invited
• [Presentation] Polymorphism of Dislocation Core Structures at the Atomistic Scale (2013)
  • Author(s): Z. C. Wang
  • Organizer: The First East-Asia Microscopy Conference
  • Place of Presentation: Chongqing, China
  • Year and Date: 2013-10-16
  • Invited
• [Presentation] Defective Boundaries in and between Functional Ceramics (2013)
  • Author(s): Z. C. Wang
  • Organizer: International Symposium on Mechanics of Composite Materials
  • Place of Presentation: Chongqing, China
  • Year and Date: 2013-05-12
• [Presentation] Atom-by-Atom Structural and Electronic Analysis of Interfaces and Grain Boundaries in Electronic Ceramics (2013)
  • Author(s): Z. C. Wang, M. Saito, S. Tsukimoto, and Y. Ikuhara
  • Organizer: The International Union of Materials Research Societies, International Conference on Electronic Materials 2012 (IUMRS-ICEM2012)
  • Place of Presentation: Pacifico Yokohama, Yokohama, Japan
  • Invited
• [Presentation] Atom-by-atom Structural and Electronic Analysis of Interfaces and Grain Boundaries in Electronic Ceramics (2012)
  • Author(s): Z. C. Wang
  • Organizer: International Union of Materials Research Societies
  • Place of Presentation: Pacifico Yokohama, Yokohama, Japan
  • Invited
• [Book] Physics behind the Ohmic Nature in Silicon Carbide Contacts (2013)
  • Author(s): Z. C. Wang
  • Publisher: INTECH open
• [Book] Physics behind the Ohmic Nature in Silicon Carbide Contacts (2013)
  • Author(s): Z. C. Wang
  • Total Pages: 401
  • Publisher: NTECH open
• [Book] Physics and Technology of Silicon Carbide Devices (2013)
  • Author(s): Z. C. Wang
  • Total Pages: 401
  • Publisher: INTECH