Development of terahertz wave detector based on topological insulator

• Project/Area Number: 26790063
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Optical engineering, Photon science
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Makino Kotaro 国立研究開発法人産業技術総合研究所, ナノエレクトロニクス研究部門, 産総研特別研究員 (30727764)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: テラヘルツ波 / トポロジカル絶縁体 / 相変化材料 / テラヘルツ/赤外材料・素子

Outline of Final Research Achievements

In this study, terahertz wave detector based on topological insulators which have Dirac electrons was demonstrated. GeTe/Sb2Te3 interfacial phase change memory materials (iPCM) were used and THz-induced electrical response was measured. We found that the irradiation of THz pulse causes decrease in the resistance of the device.

Research Products

• [Journal Article] Coherent phonon study of (GeTe) l (Sb2Te3) m interfacial phase change memory materials (2014)
  • Author(s): Kotaro Makino, Yuta Saito, Paul Fons, Alexander V. Kolobov, Takashi Nakano, Junji Tominaga and Muneaki Hase
  • Journal Title: Applied Physics Letters Volume: 105 Issue: 15 Pages: 151902-151902
  • DOI: 10.1063/1.4897997
  • NAID: 120007136562
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] THz study and ultrafast control of interfacial phase change memory material (2016)
  • Author(s): 牧野孝太郎、 黒宮章太、 高野恵介、中嶋誠、齊藤雄太、Fons Paul、Kolobov Alexander、富永淳二、中野隆志、長谷宗明
  • Organizer: Gordon Research Conference Ultrafast Phenomena in Cooperative Systems
  • Place of Presentation: Ciocco, Lucca. Barga, Italy
  • Year and Date: 2016-02-15
  • Int'l Joint Research
• [Presentation] THz detection by GeTe/Sb2Te3 interfacial phase change materials (2015)
  • Author(s): 牧野孝太郎、 黒宮章太、 高野恵介、中嶋誠、齊藤雄太、富永淳二、中野隆志
  • Organizer: 第76回応用物理学会秋季学術講演会
  • Place of Presentation: 名古屋市
  • Year and Date: 2015-09-15
• [Presentation] Photoconductive THz detection withGeTe/Sb2Te3 interfacial phase change material (2015)
  • Author(s): 牧野孝太郎、 黒宮章太、 高野恵介、中嶋誠、飯田仁志、木下基、齊藤雄太、富永淳二、中野隆志
  • Organizer: European Symposium on Phase Change and Ovonic Science
  • Place of Presentation: アムステルダム
  • Year and Date: 2015-09-07
  • Int'l Joint Research
• [Presentation] Ge-Sb-Te interfacial phase change memory material for THz device applications. (2015)
  • Author(s): 牧野孝太郎、 黒宮章太、 高野恵介、中嶋誠、齊藤雄太、富永淳二、中野隆志
  • Organizer: The Second International Symposium on Frontiers in THz Technology
  • Place of Presentation: 浜松市
  • Year and Date: 2015-09-01
  • Int'l Joint Research
• [Presentation] GeTe/Sb2Te3相変化材料の赤外線・THz波検出器応用に向けた研究 (2015)
  • Author(s): 牧野 孝太郎、齊藤 雄太、富永 淳二、中野 隆志
  • Organizer: 第62回応用物理学会春季学術講演会
  • Place of Presentation: 東海大学
  • Year and Date: 2015-03-11 – 2015-03-14
• [Presentation] GeTe/Sb2Te3 interfacial phase change materials for THz and IR light detection (2015)
  • Author(s): K. Makino, Y. Saito, J. Tominaga, and T. Nakano
  • Organizer: Topotronics 2015
  • Place of Presentation: OIST, Okinawa
  • Year and Date: 2015-03-09 – 2015-03-11
• [Presentation] 超格子相変化材料における超高速分光とフォトニクスへの展開 (2014)
  • Author(s): 牧野孝太郎
  • Organizer: 日本学術会議シンポジウム「第4回 先端フォトニクスシンポジウム」
  • Place of Presentation: 日本学術会議講堂
  • Year and Date: 2014-08-08