Development of tunneling junction refrigerator with ferromagnetic effect

• Project/Area Number: 25286046
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Applied materials
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Kashiwaya Satoshi 国立研究開発法人産業技術総合研究所, 電子光技術研究部門, 首席研究員 (40356770)
• Co-Investigator(Kenkyū-buntansha): Matsuda Kenichi 日本大学, 理工学部, 准教授 (80360931) ; Kawabata Shiro 国立研究開発法人産業技術総合研究所, 電子光技術部門, 主任研究員 (30356852)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000); Fiscal Year 2015: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2014: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000); Fiscal Year 2013: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
• Keywords: 固体冷凍器 / トンネル接合 / 固体冷凍機

Outline of Final Research Achievements

We develop a superconducting-normal metal-superconductor tunneling junction refrigerator of a suspended normal-metal type for cooling of high sensitive sensors working at ultralow temperature. The performance of the refrigerator is evaluated by comparing experimental conductance with numerical results of a theoretical formulation. The lowest temperature of 0.093 K at a bath temperature of 0.334 K indicates the successful operation of the refrigeration. The maximum cooling power of the present refrigerator estimated based on the non-equilibrium stationary state model is 213 pW at the junction area of 40 x 7 m2.

Research Products

• [Journal Article] Development of suspended normal metal type NIS refrigerator (2016)
  • Author(s): S. Kashiwaya, H. Kashiwaya, M. Koyanagi, and Y. Tanaka
  • Journal Title: Jpn. J. Appl. Phys Volume: 印刷中
  • Peer Reviewed
• [Journal Article] Detection of small exchange fields in S/F structures (2015)
  • Author(s): . S. Vasenko, S. Kawabata, A. Ozaeta, A. A. Golubov, V. S. Stolyarov, F. S. Bergeret, and F. W. J. Hekking
  • Journal Title: Journal of Magnetism and Magnetic Materials Volume: 383 Pages: 175-179
  • DOI: 10.1016/j.jmmm.2014.11.009
  • Peer Reviewed
• [Journal Article] Heat transport and electron cooling in ballistic normal-metal/spin-filter/superconductor junctions (2015)
  • Author(s): S. Kawabata, A. S. Vasenko, A. Ozaeta, F. S. Bergeret, and F. W. J. Hekking
  • Journal Title: Journal of Magnetism and Magnetic Materials Volume: 383 Pages: 157-161
  • DOI: 10.1016/j.jmmm.2014.10.032
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Efficient electron refrigeration using superconductor/spin-filter devices (2013)
  • Author(s): Shiro Kawabata, Asier Ozaeta, Andrey S. Vasenko, Frank W. J. Hekking and F. Sebastián Bergeret
  • Journal Title: Appl. Phys. Lett. Volume: 103 Issue: 3
  • DOI: 10.1063/1.4813599
  • Peer Reviewed
• [Presentation] レーザアニールによるダイヤモンド状炭素の電気，光学的特性改善 (2016)
  • Author(s): 渡邉学，大野貴史，胡桃聡，松田健一，鈴木薫
  • Organizer: 平成２８年 電気学会全国大会
  • Place of Presentation: 東北大学 川内北キャンパス
  • Year and Date: 2016-03-16
• [Presentation] レーザ支援気固界面熱分解法による P ドープ CNT の特性測定 (2015)
  • Author(s): 塚田雄太，胡桃聡，松田健一，鈴木薫
  • Organizer: 2015年放電学会年次大会
  • Place of Presentation: 防衛大学校
  • Year and Date: 2015-12-05
• [Presentation] he effect of deformation on the transport properties of quantum nanowires (2015)
  • Author(s): K. -i. Matsuda, Y. Suda, S. Matsuo, N. Hatakenaka, S. Kurumi, and K. Suzuki
  • Organizer: 2015 Material Research Society(MRS) Fall meeting
  • Place of Presentation: Boston, Massachusetts
  • Year and Date: 2015-11-29
  • Int'l Joint Research
• [Presentation] NIS トンネル接合型固体冷凍素子開発IV (2015)
  • Author(s): 柏谷聡、柏谷裕美、小柳正男
  • Organizer: 応用物理学会秋季学術講演会
  • Place of Presentation: 名古屋国際会議場
  • Year and Date: 2015-09-16
• [Presentation] Synthesis of Rod-Shaped Iron Nanocrystals Using Blue Laser-Assisted Pulsed-Laser Ablation in Liquid (2015)
  • Author(s): R. Ishihara, T. Sagara, S. Kurumi, K. -i. Matsuda, and K. Suzuki
  • Organizer: The 13th International Conference on Lasr Ablation
  • Place of Presentation: CAIRNS, QUEENSLAND, AUSTRALIA
  • Year and Date: 2015-08-31
  • Int'l Joint Research
• [Presentation] ノンコリニア磁気構造を持つスピンフィルタージョセフソン接合における量子輸送理論 (2015)
  • Author(s): 川畑史郎、A. A. Golubov
  • Organizer: 日本物理学会第70回年次大会
  • Place of Presentation: 早稲田大学（東京都・新宿区）
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] トンネル接合型固体冷凍機の開発III (2015)
  • Author(s): 柏谷聡、柏谷裕美、小柳正男
  • Organizer: 第62回応用物理学会春期学術講演会
  • Place of Presentation: 東海大学（神奈川県・平塚市）
  • Year and Date: 2015-03-12
• [Presentation] NISトンネル接合型固体冷凍機の開発
  • Author(s): 柏谷裕美、柏谷聡、川畑史郎、小柳正男
  • Organizer: 応用物理学会
  • Place of Presentation: 青山学院大学
• [Presentation] NISトンネル接合型固体冷凍機
  • Author(s): 柏谷裕美、柏谷聡、川畑史郎、小柳正男
  • Organizer: 応用物理学会
  • Place of Presentation: 同志社大学