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タイトル: Fabrication of YBaCuO junctions by the irradiation of focused ionbeam.
著者: Shiga, Hidehiro
Soutome, Yoshihisa
Okabe, Yoichi
著者(別言語): 岡部, 洋一
キーワード: Josephson effect
barium compounds
focused ion beam technology
superconducting thin films
yttrium compounds
発行日: 1999年6月
出版者: Institute of Electrical and Electronics Engineers
掲載誌情報: IEEE Transactions on Applied Superconductivity, 9 (2). pp. 2890-2893
抄録: We have fabricated Josephson junctions in YBa2Cu3 O7-δ (YBaCuO) thin films by the irradiation of focused ion beam (FIB). We used Be2+ ions with the energy of 200 keV. When the fluence of Be2+ ions was 1.2×1016 ions/cm2, the I-V characteristics of the junctions at 4.2 K showed RSJ-like characteristics with the excess current. The IcRn product of the junctions was 1.1 mV at 6.3 K. Shapiro steps up to 20th step could be observed by the irradiation of 8.47 GHz microwave at 6.3 K. The magnetic modulation curve of the junction at 4.2 K was similar to the Fraunhofer pattern. These characteristics remained unaltered after preservation in a desiccator for 6 months
URI: http://hdl.handle.net/2261/24
ISSN: 10518223
出現カテゴリ:16610 学術雑誌論文
015 技術・工学


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