TY  - JOUR
AU  - Yang, Z. Q.
AU  - Hajenius, M.
AU  - Baselmans, J. J. A.
AU  - Gao, J. R.
AU  - Voronov, B.
AU  - Gol’tsman, G. N.
PY  - 2006
DA  - 2006//
TI  - Reduced noise in NbN hot-electron bolometer mixers by annealing
T2  - Supercond. Sci. Technol.
JO  - Supercond. Sci. Technol.
SP  - L (9 to 12)
VL  - 19
IS  - 4
KW  - NbN HEB mixers
AB  - We find that the sensitivity of heterodyne receivers based on superconducting hot-electron bolometers (HEBs) increases by 25–30% after annealing at 85 °C in vacuum. The devices studied are twin-slot antenna coupled mixers with a small NbN bridge of 1 × 0.15 µm2. We show that annealing changes the device properties as reflected in sharper resistive transitions of the complete device, apparently reducing the device-related noise. The lowest receiver noise temperature of 700 K is measured at a local oscillator frequency of 1.63 THz and a bath temperature of 4.3 K.
SN  - 0953-2048
UR  - https://iopscience.iop.org/article/10.1088/0953-2048/19/4/L01
UR  - https://doi.org/10.1088/0953-2048/19/4/L01
DO  - 10.1088/0953-2048/19/4/L01
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1456), last updated on Sun, 16 May 2021 22:02:04 -0500
ID  - Yang_etal2006
ER  -