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Device physics of low-voltage transistors using gate-induced phase transitions

Research Project

Project/Area Number 17H04812
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Thin film/Surface and interfacial physical properties
Research InstitutionThe University of Tokyo

Principal Investigator

Yajima Takeaki  東京大学, 大学院工学系研究科(工学部), 助教 (10644346)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥24,700,000 (Direct Cost: ¥19,000,000、Indirect Cost: ¥5,700,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2017: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Keywords酸化バナジウム / 金属絶縁体転移 / モットトランジスタ / シングルドメイン / 微細化 / スケーリング / ジュール熱 / 非平衡 / 不安定 / 相共存 / 不均質性 / スティープスロープ / 電子・電気材料 / 低消費電力 / 電界効果トランジスタ / VO2 / ナノ構造 / 強相関エレクトロニクス / 結晶成長 / ナノ材料 / 電子デバイス・機器
Outline of Final Research Achievements

The VO2-channel transistor with metal-insulator transition was scaled down. A discontinuous switching with the single domain operation was successfully demonstrated. The results indicate the inhomogeneity of the phase transition was suppressed and the intrinsic property of the material was successfully utilized in the device operation.

Academic Significance and Societal Importance of the Research Achievements

相転移を利用した低電圧動作トランジスタを作製する際に、相転移に一般的な空間的不均質性をどう抑制するかは本質的な課題であった。今回の結果は、この課題を解決した点で、相転移トランジスタ研究の一つのマイルストーンだと言える。また今回作成したシングルドメインデバイスは、相転移トランジスタのデバイス物理を構築するための重要な基本デバイスとなることが期待できる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (13 results)

All 2020 2019 2017 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results) Patent(Industrial Property Rights) (1 results)

  • [Int'l Joint Research] 北京科技大学(中国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] 北京科技大学(中国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Modulation of VO2 Metal-Insulator Transition by Ferroelectric HfO2 Gate Insulator2020

    • Author(s)
      Yajima Takeaki、Nishimura Tomonori、Tanaka Takahisa、Uchida Ken、Toriumi Akira
    • Journal Title

      Advanced Electronic Materials

      Volume: Early view Issue: 5 Pages: 1901356-1901356

    • DOI

      10.1002/aelm.201901356

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] High-speed low-energy heat signal processing via digital-compatible binary switch with metal-insulator transitions2019

    • Author(s)
      Yajima T.、Tanaka T.、Samata Y.、Uchida K.、Toriumi A.
    • Journal Title

      IEDM

      Volume: 19 Pages: 903-906

    • DOI

      10.1109/iedm19573.2019.8993502

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] VO2 Mott Transistors for Low-Voltage ON/OFF Switching2020

    • Author(s)
      Takeaki Yajima
    • Organizer
      21th International Symposium on Eco-materials Processing and Design
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] VO2 Mott Transistors for Low-Voltage ON/OFF Switching.2020

    • Author(s)
      Takeaki Yajima
    • Organizer
      21th International Symposium on Eco-materials Processing and Design
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High-speed low-energy heat signal processing via digital-compatible binary switch with metal-insulator transitions2019

    • Author(s)
      Takeaki Yajima
    • Organizer
      IEDM2019
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Impact of Scaling the VO2-Channel Mott Transistor below Material Correlation Length2019

    • Author(s)
      Takeaki Yajima
    • Organizer
      SSDM2019
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 超急峻スイッチングを可能にするVO2モットトランジスタの特殊な動作モード2019

    • Author(s)
      矢嶋 赳彬
    • Organizer
      SDM研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] VO2モットトランジスタにおける微細化の影響2019

    • Author(s)
      矢嶋 赳彬
    • Organizer
      秋季応用物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 相転移材料によって開かれる新しい電子デバイスと回路の可能性2017

    • Author(s)
      矢嶋 赳彬
    • Organizer
      電気学会/ナノエレクトロニクス新機能創出・集積化技術専門員会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 相転移現象によって開かれる新しい電子デバイスと回路の可能性2017

    • Author(s)
      矢嶋 赳彬
    • Organizer
      第6回 酸化物研究の新機軸に向けた学際討論会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Patent(Industrial Property Rights)] 半導体デバイス2019

    • Inventor(s)
      矢嶋赳彬, 田中貴久, 内田建, 鳥海明
    • Industrial Property Rights Holder
      矢嶋赳彬, 田中貴久, 内田建, 鳥海明
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-204806
    • Filing Date
      2019
    • Related Report
      2019 Annual Research Report 2018 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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