dHvA measurements of high-Tc oxides with steady high-magnetic fields

G. Kido, H. Katayama-Yoshida, Takashi Takahashi

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The de Haas-van Alphen (dHvA) effect has been measured in YBa2Cu3O7 (Y123) and Tl2Ba2CuO6+δ (T12201) with oriented-powder samples in H//c-axis direction at the temperature range between 1.6 and 4.2 K with steady high magnetic fields up to 27 T. The oscillatory magnetization was detected by a modulation technique. We performed spectral analysis by employing the maximum entropy method (MEM). In Y123, the spectral density shows apeak at 456 T which corresponds to an extremal cross-section of 0.044 A-2. The dingle temperature was evaluated to be 7 K using the effective-mass-value of 2.1mc. In T12201, the maximum of spectral density appeared at 400 T not only for superconducting sample (δ ≅ .08) but also for metallic non-superconducting sample (δ = .1).

Original languageEnglish
Pages (from-to)1555-1560
Number of pages6
JournalJournal of Physics and Chemistry of Solids
Volume53
Issue number12
DOIs
Publication statusPublished - 1992 Jan 1

Keywords

  • Fermi surface
  • Hybrid magnet
  • de Haas van Alphen
  • oxide superconductor

ASJC Scopus subject areas

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

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