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

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

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)412-415
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume263
Issue number1-4
Publication statusPublished - 1996 May
Externally publishedYes

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Magnetic flux
magnetic flux
Energy dissipation
Vortex flow
energy dissipation
Single crystals
vortices
oscillations
single crystals
crossovers
Anisotropy
temperature distribution
Damping
damping
Magnetic fields
Fluxes
Temperature
temperature dependence
anisotropy
decay

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Study of magnetic flux in a Bi2212 single crystal by torsional oscillation. / Niimi, H.; Inoue, Kazuo; Kawamata, S.; Okuda, K.

In: Physica C: Superconductivity and its Applications, Vol. 263, No. 1-4, 05.1996, p. 412-415.

Research output: Contribution to journalArticle

Niimi, H, Inoue, K, Kawamata, S & Okuda, K 1996, 'Study of magnetic flux in a Bi2212 single crystal by torsional oscillation', Physica C: Superconductivity and its Applications, vol. 263, no. 1-4, pp. 412-415.
Niimi, H. ; Inoue, Kazuo ; Kawamata, S. ; Okuda, K. / Study of magnetic flux in a Bi2212 single crystal by torsional oscillation. In: Physica C: Superconductivity and its Applications. 1996 ; Vol. 263, No. 1-4. pp. 412-415.
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