ミリ波照射時におけるスロットアンテナ結合YBa_2Cu_3O_<7-δ>マイクロブリッジの応答機構と速度 Response Mechanism and Speed of Slot-Antenna-coupled YBa_2Cu_3O_<7-δ> Microbridge under Millimeter-wave Irradiation

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The study of nonbolometric responses caused by the vortex motion and other factors of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> (YBCO) microbridges has received much attention because of possible applications for sensitive and fast response detectors. In this study, we fabricated a slot antenna-coupled YBCO microbridge and investigated IF properties at 94 GHz to evaluate the response speed of the device in the resistive state. The response mechanism of the device biased in the resistive state consists of the bolometric response and the nonbolometric response caused by the flux creep and flux flow. From the measurements of voltage-current (I-V) characteristics and video detection properties, the response mechanism was investigated and operating conditions that dominated the bolometric and nonbolometric responses were obtained. The IF bandwidth of the device, having its response dominated by the bolometric process, showed a constant value of about 60 MHz and did not depend on the bias current. On the other hand, the bandwidth dominated by the flux flow response increased as the bias current and temperature increased, up to 1.2 GHz, and depended on the vortex velocity.

収録刊行物

  • 低温工学 = Journal of the Cryogenic Society of Japan

    低温工学 = Journal of the Cryogenic Society of Japan 39(6), 271-276, 2004-06-20

    CRYOGENICS AND SUPERCONDUCTIVITY SOCIETY OF JAPAN

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各種コード

  • NII論文ID(NAID)
    10012756987
  • NII書誌ID(NCID)
    AN00333419
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03892441
  • NDL 記事登録ID
    7014482
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z15-388
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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