Negative curvature of upper critical fields and dimensional cross-over in YBa2Cu3O7-δ thin films

G. S. Okram, Hayuyoshi Aoki, K. Nakamura

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The temperature (T) dependence of the upper critical field Hc2(T) of good quality under-doped YBa2Cu3O7-δ (YBCO) thin films exhibits negative curvature for 90%ρn criterion and follows the conventional (1 - t), t = T/Tc, dependence far below the Tc. A dimensional (3D to 2D) cross-over associated with the negative curvature, not observed earlier, is also found.

Original languageEnglish
Pages (from-to)327-331
Number of pages5
JournalSolid State Communications
Volume110
Issue number6
DOIs
Publication statusPublished - 1999 Apr 13

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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