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RF-Field-Driven Superconducting Quantum Interference Devices

Research Project

Project/Area Number 12450135
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 電子デバイス・機器工学
Research InstitutionTohoku University

Principal Investigator

YAMASHITA Tsutomu  Tohoku University, New Industry Creation Hatchery Center, Professor, 未来科学技術共同研究センター, 教授 (30006259)

Co-Investigator(Kenkyū-buntansha) MIZUGAKI Yoshinao  Tohoku University, Research Inst. of Electrical Comm., Research Associate, 電気通信研究所, 助手 (30280887)
CHEN Jian  Tohoku University, Research Inst. of Electrical Comm., Associate Professor, 電気通信研究所, 助教授 (90241588)
NAKAJIMA Kensuke  Tohoku University, Research Inst. of Electrical Comm., Associate Professor, 電気通信研究所, 助教授 (70198084)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥14,500,000 (Direct Cost: ¥14,500,000)
Fiscal Year 2001: ¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 2000: ¥8,300,000 (Direct Cost: ¥8,300,000)
Keywordsradio-frequency / field-driven / SQUID / Josephson junction / zero-crossing steps / voltagestandards / flux quantum / 磁束量子 / 粒界ジョセフソン接合 / コプレーナ型共振器 / スイッチング素子 / A / D変換器 / バイクリスタル基板 / YBCO薄膜
Research Abstract

The purpose of this study is to investigate the properties of RF-field-driven DC-SQUID (RFDS) in both simulation and experiments for future possible applications. In simulation, we have obtained the dependence of device properties upon (i) frequency of the signal, (ii) power of the signal, (iii) offset DC field, and (iv) operation margins and power gain. Next we fabricated a DC-SQUID using YBa_2Cu_3O_<7-δ> grain boundary Josephson junctions (YBCO-GBJJs) integrated with an H-shaped antenna. The results agreed with numerical ones at low power region. According to these results, we developed a coplanar-type resonator to apply RF signal to a superconducting quantum interference device (SQUID) magnetically. We fabricated a DC-SQUID using YBCO-GBJJs again, and mounted it on the resonator. By applying SF signal of 20GHz to the resonator, we observed Shapiro steps on ;the current-voltage characteristics of the SQUID. The dependence of Shapiro steps upon DC offset field agreed with the numerical results. In comparison with our previous device, the new method has three benefits: 1. We can design a resonator and a SQUID independently. 2. Hence, we can utilize wide-band frequencies by changing the resonator. 3. Also we can utilize the same SQUID for wide-band frequencies, which means we can systematically investigate the dependence of the device properties upon the frequency. Finally we extended the device configuration from two-junction SQUID to three-junction SQUID. Analytical and numerical results showed that the three-junction SQUID would generate a zero-crossing Shapiro step by applying multi-phase RF signals. Hence, the extended RF-Field-Driven SQUID would be applicable to programmable Josephson voltage standards.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] Y.Mizugaki, K.Saito, A.I.Braginski, T.Yamashita: "Josephson Switching Device Utilizing the Quantum Transitions in a Superconducting Quantum interference Device Loop"Japanese Journal of Applied Physics. 39. 55-60 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Kondo, Y.Mizugaki, K.Saito, K.Nakajima, T.Yamashita: "Switching Device Based on RF-Field-Driven High-Tc SQUID"IEICE Transactions on Electronics. E84-C. 55-60 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Kondo, Y.Mizugaki, J.Chen, K.Nakajima, T.Yamashita: "Microwave Induced Steps in RF-Field-Driven DC SQUID and its Potential Applications"IEEE Transactions on Applied Superconductivity. 11. 900-903 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Mizugaki, J.Chen, K.Nakajima, T.Yamashita: "Flux-Quantum Transitions in a Three-Junction SQUID Controlled by Two RF Signals"IEICE Transactions on Electronics. E85-C(印刷中). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Mizugaki, J.Chen, K.Nakajima, T.Yamashita: "Quantum transitions and zero-cross current-steps in a SQUID controlled by multi-phase RF fields"Physica C. (印刷中). (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Mizugaki, K. Saito, A. I. Braginski, and T. Yamashita: ""Josephson Switching Device Utilizing the Quantum Transitions in a Superconducting Quantum interference Device Loop""Japanese Journal of Applied Physics. vol. 39. 55-60 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Kondo, Y. Mizugaki, K, Saito, K. Nakajima, and T. Yamashita: ""Switching Device Based on RF-Field-Driven High-Tc SQUID""IEICE Transactions on Electronics. vol. E-84C. 55-60 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Kondo, Y. Mizugaki, J. Chen, K. Nakajima, and T. Yamashita: ""Microwave Induced Steps in RF-Field-Driven DC SQUID and its Potential Applications""IEEE Transactions on Applied Superconductivity. vol. 11. 900-903 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Mizugaki, J. Chen, K. Nakajima, and T. Yamashita: ""Flux-Quantum Transitions in a Three-Junction SQUID Controlled by Two RF Signals""IEICE Transactions on Electronics. vol. E85-C(to be published). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Mizugaki, J. Chen, K. Nakajima, and T. Yamashita: ""Quantum transitions and zero-cross current-steps in a SQUID controlled by multi-phase RF fields""Physica C. (to be published). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Kondo, Y.Mizugaki, J.Chen, K.Nakajima, T.Yamashita: "Microwave Induced Steps in RF-Field-Driven DC SQUID and its Potential Applications"IEEE Transactions on Applied Superconductivity. 11・1. 900-903 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Mizugaki, J.Chen, K.Nakajima, T.Tamashita: "Flux-Quantum Transitions in a Three-Junction SQUID Controlled by Two RF Signals"IEICE Transactions on Electronics. E85-C・3(発表予定). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Mizugaki, J.Chen, K.Nakajima, T.Tamashita: "Quantum Transitions and zero-cross current-steps in a SQUID controlled by multi-phase RF fields"Physica C. (発表予定). (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Kondo,Y.Mizugaki,K.Sato,K.Nakajima and T.Yamashita: "Switching devices based on RF-field-driven high-Tc SQUID"IEICE Trans.Electron. E84-C・1. 55-60 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 山下努: "固有ジョセフソン効果(新現象と応用の可能性)"応用物理. 70・1. 14-20 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Mizugaki,K.Saito,A.I.Braginski,and T.Yamashita: "Josephson Switching Device Utilizing the Quantum Transitions in a Superconducting Quantum interference Device Loop"Jpn.J.Appl.Phys.. 39・1. 55-60 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Yamashita T.,Kim S.-J.,Latyshev Yu.,and Nakajima K.: "Intrinsic Josephson effect and single Cooper pair tunneling"Physica C. 335 1-4. 219-225 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.B.Wang,Y.Aruga,J.Chen,K.Nakajima,T.Yamashita,and P.H.Wu: "Individual Shapiro steps observed in resistively-shunted intrinsic Josephson junctions on Bi_2Sr_2CaCu_2O_<8+x> single crystal"Appl.Phys.Lett.. 77・7. 1017-1019 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.B.Wang,J.Chen,K.Nakajima,T.Yamashita et.al.: "Intrinsic Josephson effects in YBa_2Cu_3O_<7-δ> single crystals with various oxygen deficiencies"Phys.Rev.B. 61・22. R14948-14951 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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