論文

査読有り
2017年6月

Study on the Force and Potential for the Vortex Motion Around the Concave Film Edge by the Numerical Calculation

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
  • Masumi Inoue
  • ,
  • Shota Mizoguchi
  • ,
  • Akira Fujimaki

27
4
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1109/TASC.2016.2636249
出版者・発行元
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

We studied the force and potential for the vortex around moat corner as an example of the concave edge of the superconducting film by the numerical calculation method. Vortex behavior is one of the significant factors that determine the characteristics of superconducting devices. In some simple cases, such as a straight line with a constant width, the potential for the vortex can be calculated analytically using the method of images. On the other hand, it is difficult to apply such method to arbitrary-shaped films, for example, constricted nanobridges, and moats in single-fluxquantum circuits. Control of the vortex motion is very important for such devices. We have been studying the vortex behavior by numerical calculation using the time-dependent Ginzburg-Landau equation. Vortex around the straight edge moved to the moat and accelerated with a trajectory vertical to the edge. On the other hand, vortex around the corner (concave edge) moved to the moat avoiding the corner. We calculated the force and potential distribution for the vortex inside the superconducting film. The force acting to the vortex was found to be smaller around the corner compared with that around the moat side. Such behavior was understood by the difference of the vortex distortion.

Web of Science ® 被引用回数 : 2

リンク情報
DOI
https://doi.org/10.1109/TASC.2016.2636249
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000394040200001&DestApp=WOS_CPL
ID情報
  • DOI : 10.1109/TASC.2016.2636249
  • ISSN : 1051-8223
  • eISSN : 1558-2515
  • Web of Science ID : WOS:000394040200001

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