Influence of d-wave symmetry on irreversibility line and critical current densities

S. Awaji, K. Watanabe

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


The enhancement of the upper critical field, Bc2, in a low temperature and high magnetic field region has been proposed theoretically, due to the mixing of dx2-y2- and dxy-symmetries for two-dimensional (2D) d-wave superconductors. Based on the Bc2 enhancement theory, the irreversibility field, Bi, and the critical current density, Jc, for high-Tc superconductors were calculated using the power law of Bi α Bc2n. It is found that both Bi and Jc for chemical vapor deposition (CVD)-processed YBa2Cu3O7 can be well interpreted by the present model. This fact suggests that the concave temperature dependences of Bi and Jc originate from Bc2 for 2D d-wave superconductors. Moreover, the qualitative temperature dependence of Bi for high-Tc superconductors changes slightly with the anisotropy but the value of Bi decreases drastically with increasing the anisotropic parameter γ2.

Original languageEnglish
Pages (from-to)L1022-L1025
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number10 A
Publication statusPublished - 2001 Oct 1


  • Critical current
  • Irreversibility field
  • d-wave symmetry

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)


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