Critical depinning current of elastic vortex strings in superconductors with extended linear defects

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• 作者：V. A. Fedirko ; A. L. Kasatkin ; S. V. Polyakov
• 关键词：Abrikosov vortex string ; linear defect ; calculations of critical current
• 刊名：The Physics of Metals and Metallography
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：117
• 期：9
• 页码：864-869
• 全文大小：311 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Metallic Materials
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1555-6190
• 卷排序：117

文摘

The problem of the depinning of an Abrikosov elastic vortex string from an extended linear defect in the plate of a 3D anisotropic superconductor of thickness d > 2λ (where λ is the London penetration depth) under the action of an inhomogeneously distributed transport current that flows in the surface shielding layer has been solved using classical mechanics approach. Conditions for the appearance of the instability of the pinned state of a vortex have been investigated and calculations of the corresponding critical current density on the surface at which the depinning of the vortex string occurs have been carried out. The dependence of the average of the critical current density on the thickness of the plate has been determined.