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1994 Fiscal Year Final Research Report Summary

The study of the mixed state in high-Tc Superconductors

Research Project

Project/Area Number 05804016
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 固体物性Ⅱ(磁性・金属・低温)
Research InstitutionHokkaido University

Principal Investigator

MATSUDA Yuji  Hokkaido Univ., Faculty of Science, As Professor, 理学部, 助教授 (50199816)

Co-Investigator(Kenkyū-buntansha) KUMAGAI Ken-ichi  HOKKAIDO Univ., Faculty of Science, Professor, 理学部, 教授 (70029560)
Project Period (FY) 1993 – 1994
KeywordsSuperconductor / Microwave / High-Tc / Vortex
Research Abstract

The main result in this study is that the electric state within the vortex core in high temperature superconductors is shown to be quite different from that in ordinary superconductors. Using a bolometric technique, we have improved the sensitivity of the microwave detection for two order of magnitude compared to the ordinary cavity technique. We showed that high temperature superconductor is placed in the new quantum regime, "superclean regime" which was impossible to access in ordinary superconductors.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Y・Matsuda et al: "Vortex Viscocity in YBa_2 Cu_3 O_<7-δ> at Low Temperatures" Phys.Rev.B. 49. 4380-4383 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] O.K.C.Tsui.et al: "Sharp Magnetoabsorption Resonances in the Vortex State of Bi_2 Sr_2 CaCu_2 O_<8+δ>" Phys.Rev.Lett. 73. 724-727 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Shimura et al: "Superconductivity in the surface of YBa_2 Cu_3 O_<7-δ>Films.Role of the Charge Reservoir Block on the Occurrence of the Superconductivuty in One-Unit-Cell YBa_2 Cu_3 O_<7-δ>" Physica C. 228. 91-102 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Matsuda et al: "The Low Temperature Microwave Surface Resistance of 90-K and 60-K YBa_2 Cu_3 O_<7-δ> in Magnetic Fields" Physica C. 235. 1999-2000 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J.M.Harris et al: "Hall Angle Evidence for the Superclean Regime in 60K YBa_2 Cu_3 O_<6+y>" Physical Review Letters. 19. 1711-1715 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Matsuda, N.P.Ong, Y.F.Yan, J.M.Harris, and J.B.Peterson: "Vortex Viscocity in YBa_2O_<7-delta> at Low Temperatures" Phys. Rev.B49. 4380-4383 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] O.K.C.Tsui, N.P.Ong, Y.Matsuda, Y.F.Yan, and J.B.Peterson: "Sharp Magnetoabsorption Resonances in the Vortex State of Bi_2Sr_2CaCu_2O_<8+delta>" Phys. Rev. Lett.73. 724-727 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Shimura, Y.Daido, Y.yano, T.Terashima, Y.Bando, Y.Matsuda, and S.Komiyama: "Superconductivity in the surface of YBa _2Cu_3O_<7-delta> Films. Role of the Charge Reservoir Block on the Occurrence of the Superconductivuty in One-Unit-Cell YBa_2Cu_3O_<7-delta>" Physica. C228. 91-102 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Matsuda, N.P.Ong, Y.F., Yan, J.M.Harris, and J.B.Peterson: "The Low Temperature Microwave Surface Resistance of 90-K kand 60-K YBa_2Cu_3O_<7-delta> in Magnetic Fields" Physica. C235-240. 1999-2000 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J.M.Harris, Y.F.Yan, O.K.C.Tsui, Y.Matsuda, and N.P.Ong: "Hall Angle Evidence for the Superclean Regime in 60K YBa_2Cu_3O_<6+y>" Phys. Rev. Lett.19. 1711-1717 (1994)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1996-04-15  

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