Study of magnetic flux in a Bi2212 single crystal by torsional oscillation

H. Niimi, K. Inoue, S. Kawamata, K. Okuda

研究成果: Article査読

抄録

The vortex state of a Bi2Sr2CaCu2O8+δ (Bi2212) single crystal was investigated by measuring the free torsional oscillation in magnetic field with special attention to the energy dissipation. The decay time and the oscillation period were measured at temperatures between 4.2 and 100 K under various fields up to 9 kOe. The temperature and field dependences of the energy dissipation due to flux depinning were obtained for the irreversible region. An abrupt increase of the energy dissipation was found around 1 kOe, suggesting the dimensional crossover from the 3D vortex solid to 2D pancakes with increasing field. A large damping anisotropy was also found and explained by a model of two-dimensional vortex pancakes.

本文言語English
ページ(範囲)412-415
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
263
1-4
DOI
出版ステータスPublished - 1996 5

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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