THz emission from intrinsic Josephson junctions under the layer parallel magnetic field

• Project/Area Number: 24510181
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Microdevices/Nanodevices
• Research Institution: National Institute for Materials Science
• Principal Investigator: HATANO Takeshi 独立行政法人物質・材料研究機構, 超伝導物性ユニット, グループリーダー (50354337)
• Co-Investigator(Kenkyū-buntansha): WANG Huabing 独立行政法人物質・材料研究機構, 超伝導物性ユニット, 主幹研究員 (70421427)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 固有ジョセフソン接合 / 空洞共振 / テラヘルツ / 交流ジョセフソン効果 / ビスマス系高温超伝導体 / テラヘルツ発振 / ジョセフソン磁束フロー / 固有ジョセフソン効果 / ジョセフソン磁束格子フロー

Outline of Final Research Achievements

High-Tc superconducting oxides have layered Perovskite crystal structures. Among these, in highly anisotropic Bi2Sr2CaCu2O8+, “superconducting” CuO2 double layers are interleaved with “insulating” SrO-BiO-BiO-SrO layers. Such an alternating layered structure was found to exhibit a “Josephson effect”. Namely, a device structure is naturally embedded in the crystals. The number of Josephson junctions in a crystal having a thickness of 1 μm is as much as 650, which can never be realized by a thin film fabrication technique.
Furthermore, the energy gap of a high-Tc superconductor is one order larger than that of a conventional metal superconductor (Nb), which results in the generation of a one order higher frequency microwave becoming possible, i. e. from 1 THz to 10 THz from the enormous number of junctions in the array. Thus, one can expect a powerful THz generation from a Bi2Sr2CaCu2O8+d single crystal.

Research Products

• [Journal Article] 固有ジョセフソン接合によるテラヘルツ発振器 (2015)
  • Author(s): 羽多野毅、王華兵
  • Journal Title: 応用物理 Volume: 84 Pages: 438-443
  • NAID: 130007718769
  • Peer Reviewed
• [Journal Article] Bi2Sr2CaCu2O8 intrinsic Josephson junction stacks with improved cooling: Coherent emission above 1 THz (2014)
  • Author(s): JI Min 他
  • Journal Title: APPLIED PHYSICS LETTER Volume: 105 Issue: 12
  • DOI: 10.1063/1.4896684
  • Peer Reviewed / Open Access
• [Journal Article] Direct observation of the depairing current density in single-crystalline Ba0.5K0.5Fe2As2 microbridge with nanoscale thickness (2013)
  • Author(s): Jun Li, Jie Yuan, Ya-Hua Yuan, Jun-Yi Ge, Meng-Yue Li, Hai-Luke Feng, Paulo J. Pereira, Akira Ishii, Takeshi Hatano, Alejandro V. Silhanek, Liviu F. Chibotaru, Johan Vanacken, Kazunari Yamaura, Yamaua-Bing Wang, Eiji Takayama-Muromachi, and Victor V. Moshchalkov
  • Journal Title: Appl. Phys. Lett. Volume: 103 Issue: 6
  • DOI: 10.1063/1.4818127
  • Peer Reviewed
• [Journal Article] An Approach to Use a Raw Single Crystal Whisker as Intrinsic Josephson Junctions Stack (2013)
  • Author(s): S. Saini,H.B. Wang,T. Hatano,S.-J. Kim
  • Journal Title: J Supercond Nov Magn Volume: 26 Issue: 8 Pages: 2709-2712
  • DOI: 10.1007/s10948-012-2078-z
  • Peer Reviewed
• [Journal Article] Characterization of Superconducting Thin Films by Scanning SQUID Microscopy (2013)
  • Author(s): S. Arisawa, K. Yun, K. Mochiduki, I. Iguchi, T. Hatano, H.B. Wang, A. Ishii
  • Journal Title: IEEJ Transactions on Sensors and Micromachines Volume: 133 Issue: 10 Pages: 312-313
  • DOI: 10.1541/ieejsmas.133.312
  • NAID: 10031201008
  • ISSN: 1341-8939, 1347-5525
  • Peer Reviewed
• [Journal Article] Terahertz emission and detection both based on high-Tc superconductors: Towards an integrated receiver (2013)
  • Author(s): D. Y. An, et al.,
  • Journal Title: APPLIED PHYSICS LETTERS Volume: 102 Issue: 9
  • DOI: 10.1063/1.4794072
  • Peer Reviewed
• [Journal Article] Modeling the linewidth dependence of coherent terahertz emission from intrinsic Josephson junction stacks in the hot-spot regime (2013)
  • Author(s): B. Gross, et al.,
  • Journal Title: Phys. Rev. B Volume: 88 Issue: 1
  • DOI: 10.1103/physrevb.88.014524
  • Peer Reviewed
• [Journal Article] Linewidth dependence of coherent terahertz emission from Bi2Sr2CaCu2O8 intrinsic Josephsonjunction stacks in the hot-spot regime (2012)
  • Author(s): Mengyue Li, Jie Yuan, Nickolay Kinev, Jun Li, Boris Gross, Stefan Guenon, A. Ishii, K. Hirata, Takeshi Hatano, D. Koelle, R. Kleiner, V. P. Koshelets, H. B. Wang, and P. H. Wu
  • Journal Title: PHYSICAL REVIEW B Volume: 86 Issue: 6
  • DOI: 10.1103/physrevb.86.060505
  • Peer Reviewed
• [Journal Article] Hot-spot formation in stacks of intrinsic Josephson junctions in Bi2Sr2CaCu2O8 (2012)
  • Author(s): B. Gross, S. Guenon, J. Yuan, M. Y. Li, J. Li, A. Ishii, R. G. Mints, T. Hatano, P. H. Wu, D. Koelle, H. B. Wang, and R. Kleiner
  • Journal Title: PHYSICAL REVIEW B Volume: 86 Issue: 9 Pages: 94524-94524
  • DOI: 10.1103/physrevb.86.094524
  • Peer Reviewed
• [Journal Article] Terahertz emission from Bi2Sr2CaCu2O8+delta intrinsic Josephson junction stacks with all-superconducting electrodes (2012)
  • Author(s): J Yuan, M Y Li, J Li, B Gross, A Ishii, K Yamaura, T Hatano, K Hirata, E Takayama-Muromachi, P H Wu, D Koelle, R Kleiner, and H B Wang
  • Journal Title: SUPERCONDUCTOR SCIENCE & TECHNOLOGY Volume: 25 Issue: 7 Pages: 75015-75015
  • DOI: 10.1088/0953-2048/25/7/075015
  • Peer Reviewed
• [Presentation] Coherent and Powerful Terahertz Radiation from Intrinsic Josephson Junctions in the Hotspot Region (2013)
  • Author(s): T. Hatano, et al.,
  • Organizer: 2nd Workshop on THz
  • Place of Presentation: Univ. Tsukuba
  • Invited
• [Presentation] 固有ジョセフソン接合からのテラヘルツ放射 (2013)
  • Author(s): 羽多野毅、他
  • Organizer: 日本物理学会第68回年
  • Place of Presentation: 徳島大学
• [Presentation] 固有ジョセフソンテラヘルツ発振素子 (2013)
  • Author(s): 羽多野毅、他
  • Organizer: 学振 超伝導エレクトロニクス146委員会
  • Place of Presentation: メルパルク東京
  • Invited
• [Presentation] Phenomenological aspects on THz emission from the intrinsic Josephson junctions (2013)
  • Author(s): T. Hatano, et al.,
  • Organizer: European Conference on Applied Superconductivity
  • Place of Presentation: Jenova, Italy
• [Presentation] Towards Practical Applications of THz Josephson Oscillator with Sub -mW Power and 500 GHz Frequency Tunabikity (2013)
  • Author(s): H. B. Wang, et al.,
  • Organizer: IRMMW-THZ2013
  • Place of Presentation: Mainz, Germany
  • Invited
• [Presentation] Y-123固有ジョセフソン接合における磁束フロー (2013)
  • Author(s): 羽多野 毅，長尾 雅則, 王 華兵
  • Organizer: 2013年 第60回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川工業大学
• [Presentation] Current induced lock-in phenomena in Y-123 and Bi-2212 IJJs under layer parallel magnetic field (2012)
  • Author(s): T. Hatano and H. B. Wang
  • Organizer: 第8回”高温超伝導体の固有ジョセフソン効果とプラズマ振動”シンポジウム
  • Place of Presentation: Izmir, Turkey
• [Presentation] Single junction fabrication in intrinsic Josephson junctions by in-situ ion milling near TC (2012)
  • Author(s): T. Hatano. Y. Inamoto, J. Shimizu, J. Yuan and H. B. Wang
  • Organizer: 2012応用超伝導国際会議
  • Place of Presentation: Portland, USA
• [Presentation] 固有ジョセフソン接合の低温イオンミリング加工 (2012)
  • Author(s): 羽多野毅、稲本悠也、姜振国、王華兵
  • Organizer: 2012年 秋季 第73回応用物理学会学術講演会
  • Place of Presentation: 愛媛大学
• [Remarks] NIMSの研究者情報データベース「SAMURAI」
  • URL: http://samurai.nims.go.jp/HATANO_Takeshi-j.html