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タイトル: Quasi-particle injection devices for interfaces between superconductors and semiconductors.
著者: Shiga, Hidehiro
Okabe, Yoichi
著者(別言語): 岡部, 洋一
キーワード: barium compounds
contact resistance
high-temperature superconductors
superconducting microbridges
superconductor-semiconductor boundaries
yttrium compounds
発行日: 2001年3月
出版者: Institute of Electrical and Electronics Engineers
掲載誌情報: IEEE Transactions on Applied Superconductivity, 11 (1). pp. 940-943
抄録: We have fabricated an injection type 3-terminal device for interface between superconductor and semiconductor circuits using a high temperature superconductor. When quasi-particles are injected from the Au electrode to a YBa2Cu3O7-x (YBCO) bridge, superconductivity of the bridge area is weakened and Ic of the bridge decreases. Therefore, we can easily make the bridge in resistive state by injecting sufficient amount of current Iinj . The length, width, and thickness of the bridge are 20 μm, 10 μm, and 100 nm, respectively. The Au-YBCO contact area is 200 μm 2. When the bridge became resistive, the resistance was about 100 Ω. The current gain |ΔIc/ΔIinj| was as high as 9. However, the contact resistance was about 17 Ω, which is 200 times as large as the required value for the operation as an interface device. This shortcoming might be overcome by appropriate annealing
URI: http://hdl.handle.net/2261/27
ISSN: 10518223
出現カテゴリ:16610 学術雑誌論文
015 技術・工学


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