CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Direct Measurement of Superconducting Tunnel Junction Capacitance

Parisa Yadranjee Aghdam (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling) ; Hawal Rashid (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling) ; Alexey Pavolotsky (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling) ; Vincent Desmaris (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling) ; Denis Meledin (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling) ; Victor Belitsky (Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling)
IEEE Transactions on Terahertz Science and Technology (2156-342X). Vol. 5 (2015), 3, p. 464-469.
[Artikel, refereegranskad vetenskaplig]

The Superconductor-Insulator-Superconductor (SIS) junction is the key component for millimeter and submillimeter mixers for radio astronomy and environmental science. The capacitance of the SIS mixer determines both the RF and IF performance. Previously, measurements of this capacitance has had high uncertainty. Herein, we determine the SIS junction capacitance at cryogenic temperature (~4 K) by direct measurement of the SIS junction impedance at microwave frequencies. The proposed calibration method uses only one short-circuit reference. The SIS junction capacitance measurement is realized by biasing the junction at the different parts of its current-voltage characteristic, thus eliminating a separate measurement of short-circuit standard. In order to verify the measurement results, thin-film capacitors with known capacitance were also measured. The capacitance of four SIS junctions with various areas were measured. The absolute uncertainty of the proposed measurement method was found to vary from 5 to 6.8 % amongst different junction areas.



Denna post skapades 2015-05-06. Senast ändrad 2015-11-13.
CPL Pubid: 216696

 

Läs direkt!

Lokal fulltext (fritt tillgänglig)

Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Avancerad mottagarutveckling (2010-2017)

Ämnesområden

Supraledning
Elektronik
Teknisk fysik

Chalmers infrastruktur

NFL/Myfab (Nanofabrication Laboratory)
Onsala rymdobservatorium

Relaterade publikationer

Denna publikation ingår i:


Characterisation of the Specific Capacitance of Superconducting Tunnel Junctions