Terahertz Radiation Imaging of Vortex Penetration into YBCO Thin Films with and without Ordered Arrays of Antidots(Special Issue on Superconductive Electronics)

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概要

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• Terahertz radiation imaging has been employed to diagnose the supercurent and vortex distribution in high-T_c superconductive thin film strips. We observe them in the YBCO films patterned into the strip with and without ordered arrays of small antidots. Comparison with the theoretically expected distribution reveals that the present technique can provide a powerful tool for the noncontact, nondestructive, and free-space evaluation of the supercurrent and the vortex distribution with good quantitative agreement. The effect of the antidot formation in the strips is explained by the decrease of the effective critical current. The remanent state after removal of the relatively large magnetic field cannot be explained by the conventional model for the superconductive thin films, and the discrepancy is more notable in the antidot-formed area.

• 社団法人電子情報通信学会の論文
• 2001-01-01

著者

• Moto A

  Department Of Electrical And Electronic Engineering Kanazawa University

• Hangyo Masanori

  The Authors Are With The Research Center For Superconductor Photonics Osaka University

• Tonouchi Masayoshi

  The Author Is With The Presto Japan Science And Technology Corporation

• MOTO Akihiro

  The authors are with the Research Center for Superconductor Photonics, Osaka University

• Moto Akihiro

  The Authors Are With The Research Center For Superconductor Photonics Osaka University

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