ナカヤマ アキヨシ   Nakayama Akiyoshi
  中山 明芳
   所属   神奈川大学  工学部 電気電子情報工学科
    神奈川大学大学院  工学研究科 工学専攻(電気電子情報工学領域)
   職種   教授
言語種別 英語
発行・発表の年月 2016/04
形態種別 学術雑誌
査読 査読あり
標題 Deviation from Fraunhofer-Type Modulation of Josephson Current Through Niobium Tunnel Junctions by Applying Vertical Magnetic Field
執筆形態 共著
掲載誌名 IEEE Transactions on Applied Superconductivity
掲載区分国外
出版社・発行元 IEEE Institute of Electrical and Electronic Engineering
巻・号・頁 26(3),pp.1100606-1-1100606-6
担当範囲 Device fabrication, measurement
著者・共著者 Akiyoshi NAKAYAMA,Susumu ABE, Norimichi WATANABE
概要 Anomalous modulation characteristics of Josephson current Ic through niobium tunnel junction have been measured by applying the external magnetic field in perpendicular direction. Josephson current Ic through superconducting niobium/aluminum-oxide/niobium tunnel junction is modulated by applying the parallel magnetic field (Hx, Hy) and the vertical field Hz to the junction plane using three pairs of Helmholtz coils. Modulation characteristics of the Ic value upon the vertical field Hz have hysteresis. After applying the vertical field Hz more than 5000 A/m, during removing process of this vertical field Hz, the Ic-(Hx,Hy) modulation pattern shows triangle shape main peak area, due to the remained trapping and shielding magnetic flux at niobium electrodes.
researchmap用URL http://www.ieee.org