비의류제품

in situ ion beam processing for josephson junction fabrication

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 497
the use of ion beam processing in fabricating josephson junction tunnel devices introduces several advantages over other plasma discharge techniques, both in substrate precleaning and oxidation. the ion flux and ion energy can be controlled independently, the energy spread is narrow, the source plasma is isolated from the substrates and chamber, and the whole procedure is carried out in a low pressure environment, thus reducing contamination due to background gas and backscattering. nb-nbo/sub x/-pbinau josephson junctions were fabricated by ion beam oxidation preceded by a fixed ion beam cleaning step. the effects of the oxidation time and the ion energy in the oxidation beam on junction characteristics were studied
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