Specific capacitance of Nb/Al-AlN/Nb superconducting tunnel junctions
Paper i proceeding, 2019

Modern radio astronomy demands for broadband receiver systems. For SIS mixers, this translates into objective to employ superconducting tunnel junctions with a very low RnA and low specific capacitance. The traditionally used Nb/AlOx/Nb junctions have largely approached their physical limit of
minimizing those parameters. It is commonly recognized that it is AlN-barrier junctions, which are needed for further progressing of the broadband SIS mixer instrumentation for radio astronomy. In this work, we present the progress in fabrication of high quality Nb/Al-AlN/Nb superconducting tunnel (SIS) junctions and their characterization in terms DC electric properties junctions’ specific capacitance.

SIS

Nb/Al-AlN/Nb

Författare

Alexey Pavolotskiy

Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium, GARD teknik

Cristian Daniel López

Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium, GARD teknik

Isabel Vrethed Tidekrans

Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium, GARD teknik

Denis Meledin

Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium, GARD teknik

Vincent Desmaris

Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium, GARD teknik

Victor Belitsky

Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium, GARD teknik

ISSTT Proceedings by NRAO

30th International Symposium on Space THz Technology (ISSTT2019)
Gothenburg, Sweden,

Ämneskategorier

Språkteknologi (språkvetenskaplig databehandling)

Textil-, gummi- och polymermaterial

Biomedicinsk laboratorievetenskap/teknologi

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2020-10-01