• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1992 Fiscal Year Final Research Report Summary

Effects of Layer Structure in High Temperature Superconducting Oxides

Research Project

Project/Area Number 03640328
Research Category

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

Allocation TypeSingle-year Grants
Research Field 物性一般(含極低温・固体物性に対する理論)
Research InstitutionTohoku University

Principal Investigator

TACHIKI Masashi  Tohoku University,Institute for Materials Research,Professor, 金属材料研究所, 教授 (20028111)

Co-Investigator(Kenkyū-buntansha) TAKAHASHI Saburo  Tohoku University,Institute for Materials Research,Research Associate, 金属材料研究所, 助手 (60171485)
KOYAMA Tomio  Tohoku University,Institute for Materials Research,Research Associate, 金属材料研究所, 助手 (30153696)
MATSUMOTO Hideki  Tohoku University,Institute for Materials Research,Associate Professor, 金属研究所, 助教授 (40209648)
Project Period (FY) 1991 – 1992
Keywordshigh temperature superconducting oxides / layered superconductors / mixed state / proximity effect / pinning effect / critical current / superconducting multilayer
Research Abstract

Based on a layered model composed of strongly and weakly superconducting layers,we investigated the effects of the layer structure on the superconducting properties of the high temperature superconducting oxides. It has been pointed out that the transport current in these layered oxides flows mainly in the strongly superconducting layers, while the vortex center lies in a weakly superconducting layer.The Lorents force working on the vortex is proportional to the value of the transport current at the vortex center.As a result,the effective driving force acting on the vortex is greatly reduced.We estimated the pinning force and the critical current,using this layered model.The resistive state in these oxides was also investigated,based on a flux flow model.We calculated phenomenologically the temperature dependence of the resistivity under an external field. It is concluded that in the resistive transition of the oxides a crossover from thermally assisted flux flow regime to flux flow dominated regime takes place.
The angular dependence of the upper critical field H_<c2> in layered superconductors shows a clear difference from that in the anisotropic effective mass model and also from that in a thin film when the superconducting coherence length perpendicular the layers is shorter than the layer thickness at T=0K.We formulated a calculation of the upper critical field in an arbitrary direction rheta, using a generalized Ginzburg-Landau model for layered superconductors.The angular dependence of H_<c2> in the region near rheta=90゚(parallel to the layers)is correlated with the dimensionality in the temperature dependence of H_<c2>(90゚). We have a bell-shaped curve in the 3D regime near the transition temperature and a curve with a cusp at rheta=90゚ in the 2D regime in the H_<c2> versus rheta curve.

  • Research Products

    (58 results)

All Other

All Publications (58 results)

  • [Publications] Y.FUKUDA: "Eletronic states of core levels and valence bands for K_XC_<60> studied by x-ray photoelectron spectroscopy" Physica C. 181. 320-324 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.TACHIKI: "Properties of flux lines in cuprate oxide superconductors" Physica C. 185-189. 303-308 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Petersen: "Evidence from heat conductivity for normal-conducting chains in the hihg Tc Superconductor YBa_2Cu_3O_<6.9>" Physica C. 185-189. 1363-1364 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N.SANADA: "Effects of oxygen loss from Bi-2201 phase doped by Pb and La on superconductivity" physica C. 185-189. 665-666 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.NAGOSHI: "photoemission study on Ba_<1-X>K_XBi_<1-X>O_<3-δ> and Bi_<1-X>O_<3-δ>" Physica C. 185-189. 1051-1052 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.FUKUDA: "Effects of substitution for Fe and Co for Cu in Bi_2Sr_<1.8>Ca_<1.2>Cu_2O_Y on electronic state studied by photomission" Physica C. 190. 73-74 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.TAKAHASHI: "Optical conductivity in the superocnducting state of layered cuprate oxides" Physica C. 185-189. 1677-1678 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.TACHIKI: "Knight shift and nuclear relaxation rate in layered cuprate superconductors" Physica C. 185-189. 1661-1662 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.SASAKI: "Study of the midgap state in oxide superconductors by composite operator approach" Physica C. 185-189. 1491-1492 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.KOYAMA: "Mixed state in layered superconductors" Physica C. 185-189. 1597-1598 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.MATSUMOTO: "Composite electronic excitations in high Tc oxide superconductors" JJAP Series,Mechanisms of superconductivity(JJAP). 7. 324-329 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.MATSUMOTO: "Highly correlated electron state in oxide superconductors" Prog.Theor.Phys.Suppl. 106. 31-42 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.TACHIKI: "Proximity effects in high-Tc oxide superconductors" Physica C. 191. 363-370 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.TACHIKI: "Electronic state in oxide superconductors" Springer series in solid-state science(Springer-Verlag,Berlin). 106. 55-62 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.KOYAMA: "Theory for resitive transition in cuprate oxides multilayers" Physica C. 193. 163-170 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.NAGOSHI: "ElectroniC staes of BaBiO_<3-δ> and K-doping effects studied by photoemission spectroscopy" J.Phys.Condens.Matter. 4. 5679-5781 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.NAGOSHI: "Changes of electronic states of superconducting oxides by various surface treatments studied by XPS and SEM" Proc.of 4th Internatinal Symposium on Superconductivity(ISS'91). 79-82 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.TACHIKI: "Superconducting properties of layered cuprate oxides" Prog.Theor.Phys.Suppl.108. 297-311 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.KOYAMA: "New continuous model for intrinsic layered superconductors" Physica C. 194. 20-30 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.MATSUMOTO: "Composite-operator approach for the p-d mixing model of oxide superconductors" Phys.Rev.B. 46. 3009-3021 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.SASAKI: "Electronic state of high-tc cuprate superconductors as studied by the use of the composite-operator approach" Phys.Rev.B. 46. 3022-3040 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] C.D.Bredl: "Anisotropic low-temperature heat transport in YBa_2Cu_3O_<6.9> single crystal" Z.Phys.B - Condensed Matter. 86. 187-191 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.MATSUMOTO: "Spin and charge fluctuation and electronic state in high Tc superconductors" J.Phys.Chem.Solids. 53. 1507-1514 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.FUKUDA: "Photoemission study of iodine-intercalated Bi_2Sr_2CaCu_2O_Y single crystal" J.Phys.Chem.Solids. 53. 1589-1594 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.TACHIKI: "Effect of intrinsic pinning on critical current in cuprate superconductors" Cryogenics. 32. 923-930 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.ISHIHARA: "Dynamical spin and charge fluctuations in the p-d mixing model" Physica B.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] X.G.Qiu: "Resitive dissipation in the flux liquid state in high temperature superconductors" Physca C.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.TACHIKI: "Driving and pinning forces actin on vortices in layered superconductors" Phys.Rev.B.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] N.TAKEZAWA: "Angular dependence of the upper critical field in layered superconductors" Physica C.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y. Fukuda: "Electronic states of core levels and valence bands for K_xC_<60> studied by x-ray photoelectron spectroscopy" Physica C. 181. 320-324 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Tachiki: "Properties of flux lines in cuprate oxide superconductors" Physica C. 185-189. 303-308 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Petersen: "Evidence from heat conductivity for normalconducting chains in the high Tc superconductor YBa_2Cu_3O_<6.9>" Physica C. 185-189. 1363-1364 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Sanada: "Effects of oxygen loss from Bi-2201 phase doped by Pb and La on superconductivity" Physica C. 185-189. 665-666 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Nagoshi: "Photoemission study on Ba_<1-x>K_xBi_<1-x>O_<3-delta> and Bi_<1-x>O_<3-delta>" Physica C. 185-189. 1051-1052 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Fukuda: "Effects of substitution for Fe and Co for Cu in Bi_2Sr_<1.8>Ca_<1.2>Cu_2O_y on electronic state studied by phototemission" Physica C. 190. 73-74 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Takahashi: "Optical conductivity in the superconducting state of layered cuprate oxides" Physica C. 185-189. 1677-1678 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Tachiki: "Knight shift and nuclear relaxation rate in layered cuprate superconductors" Physica C. 185-189. 1661-1662 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Sasaki: "Study of the midgap state in oxide superconductors by composite operator approach" Physica C. 185-189. 1491-1492 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Koyama: "Mixed state in layered superconductors" Physica C. 185-189. 1597-1598 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Matsumoto: "Composite electronic excitations in high Tc oxide superconductors" JJAP Series 7,Mechanisms of superconductivity(JJAP, ed. by Y. Muto). 324-329 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Matsumoto: "Highly correlated electron state in oxide superconductors" Prog.Tehor.Phys. Suppl.106. 31-42 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Tachiki: "Proximity effects in high-Tc oxide superconductors" Physica C. 191. 363-370 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Tachiki: "Electronic state in oxide superoncductors" Springer series in solid-state science, 106 Physics of high-Tc super conductors (Springer-Verlag). 55-62 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Koyama: "Theory for resistive transition in cuprate oxides multilayers" Physica C. 193. 163-170 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Nagoshi: "Electronic states of BaBiO_<3-delta> and K-doping effects studied by photoemission spectroscopy" J. Phys. Condens. Matter 4. 5679-5781 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Nagoshi: "Changes of electronic states of superconducting oxides by various surface treatments studied by XPS and SEM" Proc. of 4th International Symposium on Superconductivity (ISS'91). 79-82 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Tachiki: "Superconducting properties of layered cuprate oxides" Prog.Theor.Phys. Suppl.108. 297-311 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Koyama: "New continuous model for intrinsic layered superconductors" Physica C. 194. 20-30 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Matsumoto: "Composite-operator approach for the p-dmixing model of oxide superconductors" Phys. Rev B. 46. 3009-3021 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Sasaki: "Electronic state of high-Tc cuprate superconductors as studied by the use of the composite-operator approach" Phys. Rev. B. 46. 3022-3040 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] C. D. Bredl: "Anisotropic low-temperature heat transport in YBa_2Cu_3O_<6.9> single crystal" Z. Phys. B - Condensed Matter. 86. 187-191 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Matsumoto: "Spin and charge fluctuation and electronic state in high Tc superconductors" J. Phys. Chem. Solids. 53. 1507-1514 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Fukuda: "Photoemission study of iodine-intercalated Bi_2Sr_2CaCu_2O_y single crystal" J. Phys. Chem. Solids. 53. 1589-1594 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Tachiki: "Effect of intrinsic pinning on critical current in cuprate superconductors" Cryogenics. 32. 923-930 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Ishihara: "Dynamical spin and charge fluctuations in the p-d mixing model" Physica B.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] X. G. Qiu: "Resistive dissipation in the flux liquid state in high temperature superconductors" Physica C.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Tachiki: "Driving and pinning forces acting on vortices in layered superconductors" Phys. Rev. B.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N. Takezawa: "Angular dependence of the upper critical field in layered superconductors" Physica C.

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

URL: 

Published: 1994-03-24  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi