Vortex dynamics in single crystal Hg-1201

M. Baenitz, K. Lüders, D. Maurer, N. Barišić, Y. Cho, Y. Li, G. Yu, X. Zhao, M. Greven

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Anisotropic superconducting materials often show an enhanced pinning along their crystallographic ab-planes. To obtain information about such a behavior of the high-Tc system Hg-1201 (HgBa2CuO4) magnetic investigations on a single crystal are performed for the two field orientations, parallel to the c-axis and parallel to the ab-planes. The dependence of the ac magnetization on temperature, magnetic field and frequency is determined. Compared to former results on powder samples of this system no indication of a second peak in the imaginary part of the susceptibility χ′′ is found. It seems to be shifted to higher temperatures overlapping now with the first peak. The corresponding irreversibility lines for both orientations, parallel to c and parallel to ab, are determined and discussed within the framework of a "diffusion" model.

Original languageEnglish (US)
Pages (from-to)1126-1128
Number of pages3
JournalPhysica C: Superconductivity and its applications
Volume469
Issue number15-20
DOIs
StatePublished - Oct 15 2009

Keywords

  • Flux creep
  • High-T superconductors
  • Pinning
  • Vortex dynamics

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