Effect of Current on Collective Motion of Flux Lines in a Bulk Y<sub>1</sub>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> Superconductor
書誌事項
- 公開日
- 1991-01-01
- 権利情報
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- https://iopscience.iop.org/page/copyright
- https://iopscience.iop.org/info/page/text-and-data-mining
- DOI
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- 10.1143/jjap.30.l92
- 公開者
- IOP Publishing
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説明
<jats:p> When a permanent magnet, placed above a high temperature superconductor (HTSC), is moved by an external force, the flux lines in the HTSC will follow the magnet and perform a collective motion due to the interaction between the flux lines and the magnet. Here, the collective motion of flux lines in an Y<jats:sub>1</jats:sub>Ba<jats:sub>2</jats:sub>Cu<jats:sub>3</jats:sub>O<jats:sub>7-δ</jats:sub> (Y123) HTSC is studied by a mechanical pendulum method for various transport currents <jats:italic>I</jats:italic> through the sample. The magnet is set in low frequency (typically 1 Hz) oscillations with a mechanical pendulum, and the current <jats:italic>I</jats:italic> is flowing perpendicular to the direction of the magnet motion. The experiments show that the shift of the stiffness (corresponding the shift of the frequency squared) exhibits a cross-over phenomenon: from independence to power law-like dependence for increasing currents. The results are compared with the theories of collective flux creep in HTSCs. </jats:p>
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 30 (1B), L92-, 1991-01-01
IOP Publishing
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詳細情報 詳細情報について
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- CRID
- 1360003446841169920
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- NII論文ID
- 210000031743
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- ISSN
- 13474065
- 00214922
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