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Shapiro-like steps from a weakly coupled junction prepared with high-[ital T][sub [ital c]] superconducting materials

Journal Article · · Applied Physics Letters; (United States)
DOI:https://doi.org/10.1063/1.112229· OSTI ID:6931070
; ; ;  [1]
  1. Department of Electronics, Faculty of Engineering, Himeji Institute of Technology, Shosha 2167, Himeji 671-22 (Japan)
A trilayer junction composed of YBa[sub 2]Cu[sub 3]O[sub [ital y]]/La[sub 0.7]Ca[sub 0.3]MnO[sub [ital z]]/YBa[sub 2]Cu[sub 3]O[sub [ital y]] is prepared and the current-voltage ([ital I]-[ital V]) characteristics are examined with and without microwave illumination. The flow of the superconducting current is observed through the trilayer junction. At the same time, the trilayer junction is illuminated with microwaves. Resultant [ital I]-[ital V] curves show Shapiro-like steps, the spacing of which is different from that of the real Shapiro steps as well as the increase of electrical resistance of the junction by the illumination. It is also observed that the Shapiro-like steps exhibit a kind of negative resistance on the current-voltage curve.
OSTI ID:
6931070
Journal Information:
Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 65:6; ISSN 0003-6951; ISSN APPLAB
Country of Publication:
United States
Language:
English

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