• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

INFRARED LIGHT CONTROL OF SINGLE-ELECTRON SPIN IN THE NITRIDE QUANTUM DOTS AND ITS APPLICATION

Research Project

Project/Area Number 14205015
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied physics, general
Research InstitutionTokyo Institute of Technology

Principal Investigator

KAWASAKI KOJI (2003)  TOKYO INSTITUTE OF TECHNOLOGY, INTERDISCIPLINARY GRADUATE SCHOOL OF SCIENCE AND ENGINEERING, RESEARCH ASSOCIATE, 大学院・総合理工学研究科, 助手 (10234056)

青柳 克信 (2002)  東京工業大学, 大学院・総合理工学研究科, 教授 (70087469)

Co-Investigator(Kenkyū-buntansha) ISHIBASHI KOJI  RIKEN, ADVACED DEVICE LABORATORY, CHIEF, 極微デバイス工学研究室, 主任研究員 (30211048)
武内 道一  理化学研究所, 半導体工学研究室, 研究員 (60284585)
川崎 宏治  東京工業大学, 大学院・総合理工学研究科, 助手 (10234056)
Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥55,770,000 (Direct Cost: ¥42,900,000、Indirect Cost: ¥12,870,000)
Fiscal Year 2003: ¥15,340,000 (Direct Cost: ¥11,800,000、Indirect Cost: ¥3,540,000)
Fiscal Year 2002: ¥40,430,000 (Direct Cost: ¥31,100,000、Indirect Cost: ¥9,330,000)
KeywordsQUANTUM DOTS / SINGLE-ELECTRON / SPIN / INFRARED CONTROL / NITRIDE SEMICONDUCTOR / CARBONNANOTUBE / 窒化物 / 半導体量子ドット / 単一電子スピン / クーロンブロッケード / MBE / 選択成長法 / 電子スピン / 赤外光 / GaN / AlN / 単一電子トランジスタ
Research Abstract

The new operation principle to realize quantum logic gate using GaN and related materials was proposed. A GaN quantum dot structure was obtained by selective area growth method using MBE system. Clear Coulomb blockade phenomena were observed at 6K. The vertical single electron transisters were fabricated for manipulation of single electron spin using infrared light pulses carbon nanotube quantum dots were investigated for realizations of quantum elements. The simple two-electron and four-electron shell structures have been clearly demonstrated in the single-wall carbon nanotube (SWNT) quantum dot, and are observed to be dependent on the level spacing Δ and the level mismatch δ. The exchange interaction has been directly observed as an exchange splitting in the excitation spectroscopy with a large source-drain bias. The single particle state in magnetic fields has shown simple Zeeman splitting without any orbital effect due to a tube diameter that is much smaller than the cyclotron diameter. The large zero-dimensional level spacing has made it possible to observe the simple shell structures in a dot that contains many electrons, and the nanotube quantum dot is shown to be an artificial atom that demonstrates the two-electron system. The present results are an important step toward the realization of the spin-qubit and various entanglement devices in quantum information processing.

Report

(3 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • Research Products

    (14 results)

All 2005 2004 2003 2002 Other

All Journal Article (13 results) Publications (1 results)

  • [Journal Article] Four-electron shell structures and an interacting two-electron system in carbon nanotube quantum dots2005

    • Author(s)
      S.Moriyama
    • Journal Title

      Physical Review Letters 94

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Importance of electron-electron interactions and Zeeman splitting in single-wall carbon nanotube quantum dots2005

    • Author(s)
      S.Moriyama
    • Journal Title

      Physica E 26

      Pages: 473-476

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Four-electron shell structures anad an interacting two-electron system in carbon nanotube quantum dots2005

    • Author(s)
      S.Moriyama, T.Fuse, M.Suzuki, Y.Aoyagi, K.Ishibashi
    • Journal Title

      Physical Review Letters 94

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Importance of electron-electron interactions and Zeeman splitting in signle-wass carbon nanotube quantum dots2005

    • Author(s)
      S.Moriyama, T.Fuse, M.Suzuki, Y.Aoyagi, K.Ishibashi
    • Journal Title

      Physica E{26}

      Pages: 473-476

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Selecting single quantum dots from a bundle of single-wall carbon nanotubes using effect of the large current flow'2004

    • Author(s)
      S.Moriyama
    • Journal Title

      Science and Technology of Advanced Materials 5

      Pages: 613-615

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Carbon nanotubes as a building block of quantum dot devices2004

    • Author(s)
      M.Suzuki, K.Tsuya, S.Moriyama, T.Fuse, Y.Aoyagi, K.Ishibashi
    • Journal Title

      Physica E{24}

      Pages: 10-13

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Selecting single quantum dots from a bundle of single-wall carbon nanotubes using effect of the lareg current flow2004

    • Author(s)
      S.Moriyama, T.Fuse, M.Suzuki, Y.Aoyagi, K.Ishibashi
    • Journal Title

      Science and Technology of Advanced Materials {5}

      Pages: 613-615

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Two-electron and four-electron periodicity in single-wall carbon nanotube quantum dots2004

    • Author(s)
      T.Fuse, S.Moriyama, Y.Aoyagi, M.Suzuki, K.Ishibashi
    • Journal Title

      Superlattices and Microstructures {34}

      Pages: 377-382

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Electrical transport in semiconducting single-wall carbon nanotubes2004

    • Author(s)
      S.Moriyama, K.Toratani, D.Tsuya, M.Suzuki, Y.Aoyagi, K.Ishibashi
    • Journal Title

      Physica E{24}

      Pages: 46-49

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Effect of the large current flow on the low temperature transport properties in a bundle of single-wall carbon nanotubes"2003

    • Author(s)
      T.Fuse
    • Journal Title

      Applied Physics Letters 83

      Pages: 3803-3805

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Effect of the large current flow on the low temperature transport properties in a bundle of single-wall carbon nanotubes2003

    • Author(s)
      T.Fuse, S.Moriyama, M.Suzuki, Y.Aoyagi, K.Ishibashi
    • Journal Title

      Applied Physics Letters {83}

      Pages: 3803-3805

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Formation of GaN nanopillars by selective area growth using ammonia gas source molecular beam epitaxy2002

    • Author(s)
      Koji Kawasaki
    • Journal Title

      Journal of Crystal Growth 243

      Pages: 129-133

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Journal Article] Formation of GaN nanopillars by selective area growth using ammonia gas source molecular beam epitaxy2002

    • Author(s)
      Koji Kawasaki, Ikuo Nakamatsu, Hideki Hirayama, Kazuo Tsutsui, Yoshinobu Aoyagi
    • Journal Title

      Journal of Crystal Growth 243

      Pages: 129-133

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Koji Kawasaki, Ikuo Nakamatsu, Hideki Hirayama, Kazuo Tsutsui, Yoshinobu Aoyagi: "Formation of GaN nanopillars by selective area growth using ammonia gas source molecular beam epitaxy"Journal of CRYSTAL GROWTH. 243. 129-133 (2002)

    • Related Report
      2002 Annual Research Report

URL: 

Published: 2002-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi