MODULATION OF SELF-RESONANT MODES IN NBCN MGO/NBCN JUNCTIONS LAY BY QUASI-PARTICLE INJECTION/

Authors
KOHJIRO S KIRYU S SHOJI A KODAIRA S TAKADA S
Citation
S. Kohjiro et al., MODULATION OF SELF-RESONANT MODES IN NBCN MGO/NBCN JUNCTIONS LAY BY QUASI-PARTICLE INJECTION/, IEEE transactions on applied superconductivity, 5(2), 1995, pp. 2224-2227
Citations number
10
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on applied superconductivity → ACNP
ISSN journal
10518223
Volume
5
Issue
2
Year of publication
1995
Part
3
Pages
2224 - 2227
Database
ISI
SICI code
1051-8223(1995)5:2<2224:MOSMIN>2.0.ZU;2-L
Abstract
In submillimeter wave region, we have studied the modulation of self-r esonant modes in NbCN/MgO/NbCN Josephson junctions (detectors). The tu ning mechanism is based on the quasiparticle injection via an overlaid funnel junction (injector). From the current-voltage characteristics of detectors, the maximum shift of resonant frequencies Delta f and Q factors due to electrode loss at the injected state Q(inj) have been e stimated to be Delta f/f(0)=0.01 and Q(inj)=100 at 470GHz, where f(0) is the resonant frequency without quasiparticle injection. It is found Q(inj) decreases with increase of the injector bias voltage.