ELECTROMAGNETIC WAVE DETECTION ELEMENT AND ELECTROMAGNETIC WAVE DETECTION DEVICE USING THE SAME

摘要

It is possible to improve the negative resistance characteristic that can be expected when an SNS (superconductor-normal conductor-superconductor) structure is used as a structure unit for series connection. On the top of a first superconducting electrode, a second superconducting electrode is superimposed so as to sandwich an insulation film between the first and second superconducting electrodes, with parts of cross sections of the second superconducting electrode and insulation film placed on the top. A normal superconducting line electrically connects the first and second superconducting electrodes passing along the cross section of the insulation film, thereby constituting a structure unit having a single weak link. A plurality of such structure units connected in series are prepared. At the both ends of the series, the first or second superconducting electrode is an element connected to a leading line. The structure units are arranged so that the cross sections of the insulation films along which the normal conducting line passes are arranged in the same direction.