Science in China Series A: Mathematics

, Volume 43, Issue 2, pp 163–170 | Cite as

Argument forE ×j relation of high temperature superconductors

  • Hao Jin
  • Lin Chen
  • Xiaojun Xu
  • Yuheng Zhang


In high temperature superconductors (HTSC), when magnetic relaxation approaches the equilibrium state and the superconductor is applied with current, theE × j relation is calculated by considering both forward and backward hopping of thermally activated flux (where backward hopping means hopping from the barriers with low energy to the ones with high energy). It is pointed out that the InE× Inj curve shows positive curvature. And the results are compared with other models. The discussion on the topic that whether p approaches zero asj → 0 is carried out.


flux dynamics thermally activated 


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  1. 1.
    Anderson, P. W., Theory of flux creep in hard superconductors, Phys. Rev. Lett., 1962, 9: 309.CrossRefGoogle Scholar
  2. 2.
    Yeshurun, Y., Malozemoff, A. P., Shaulov, A. et al., Magnetic relaxation in high-temperature superconductors, Rev. Mod. Phys., 1996, 68: 911.CrossRefGoogle Scholar
  3. 3.
    Fisher, M. P. A., Vortex-glass superconductivity: a possible new phase in bulk high-T c oxides, Phys. Rev. Lett., 1989, 62:1415.CrossRefGoogle Scholar
  4. 4.
    Fisher, D. S., Fisher, M. P. A., Huse, D. A., Thermal fluctuations, quenched disorder, phase transitions, and transport in type-II superconductors, Phys. Rev. B, 1991, 169: 85.Google Scholar
  5. 5.
    Feigle’man, M. V., Geshkenbein, V. B., Larkin, A. I. et al., Theory of collective flux creep, Phys. Rev. Lett., 1989, 63: 2303.CrossRefGoogle Scholar
  6. 6.
    Feigle’man, M. V., Geshkenbein, V. B., Vinokur, V.M., Flux creep and current relaxation in high-T c superconductors, Phys. Rev. B, 1991, 43: 6263.CrossRefGoogle Scholar
  7. 7.
    Zeldov, E., Amer, N. M., Koren, G. et al., Optical and electrical enhancement of flux creep in YBa2Cu3O7-y epitaxial fims, Phys. Rev. Lett., 1989, 62: 3093.CrossRefGoogle Scholar
  8. 8.
    Hagen, C. W., Griessen, R., Distribution of activation energies for thermally activated flux motion in high-T c superconductors: An inversion scheme, Phys. Rev. Lett., 1989, 62: 2857.CrossRefGoogle Scholar
  9. 9.
    Griessen, R., Resistive behavior of high-T c superconductors: Influence of a distribution of activation energies, Phys. Rev. Lett., 1990, 64: 1674.CrossRefGoogle Scholar
  10. 10.
    van der Beek, C. J., Nieuwenhuys, G. J., Kes, P. H. et al., Nonlinear current diffusion in type-II superconductors, Physica C, 1992, 197: 320.CrossRefGoogle Scholar
  11. 11.
    Yin, D., Schauer, W., Windte, V. et al., A new understanding of the resistive state and theV-I characteristic of high-T c, superconductors, Z. Phys. B, 1994, 94: 249.CrossRefGoogle Scholar
  12. 12.
    Natterman, T., Scaling approach to pinning: charge density waves and giant flux creep in superconductors, Phys. Rev. Lett., 1990, 64: 2454.CrossRefGoogle Scholar
  13. 13.
    Jiang, W., Yeh, N. C., Reed, D. S. et al., Vortex-solid melting and depinning in superconducting Y-Ba-Cu-0 single crystals irradiated by 3-MeV protons, Phys. Rev. B, 1993, 47: 8308.CrossRefGoogle Scholar
  14. 14.
    Fu, L., Xu, X. J., Jin, H. et al., A new result of theE-j relationship of thermally activated model of high-Tc superconductor, Physica C, 1997, 282(287): 2341.CrossRefGoogle Scholar
  15. 15.
    Charalambous, M., Koch, R. H., Masselink, T. et al., Subpicovolt resolution measurements of the current voltage characteristics of twinned crystalline YBa2Cu3O7-x: new evidence for a vortex-glass phase, Phys. Rev. Lett., 1995, 75: 2578.CrossRefGoogle Scholar

Copyright information

© Science in China Press 2000

Authors and Affiliations

  1. 1.Structure Research LaboratoryUniversity of Science and Technology of ChinaHefeiChina

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