@Article{Yang_etal2006, author="Yang, Z. Q. and Hajenius, M. and Baselmans, J. J. A. and Gao, J. R. and Voronov, B. and Gol{\textquoteright}tsman, G. N.", title="Reduced noise in NbN hot-electron bolometer mixers by annealing", journal="Supercond. Sci. Technol.", year="2006", volume="19", number="4", pages="L (9 to 12)", optkeywords="NbN HEB mixers", abstract="We find that the sensitivity of heterodyne receivers based on superconducting hot-electron bolometers (HEBs) increases by 25--30{\%} after annealing at 85{\thinspace}{\textdegree}C in vacuum. The devices studied are twin-slot antenna coupled mixers with a small NbN bridge of 1 {\texttimes} 0.15 {\textmu}m2. 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.", optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1456), last updated on Sun, 16 May 2021 22:02:04 -0500", issn="0953-2048", doi="10.1088/0953-2048/19/4/L01", opturl="https://iopscience.iop.org/article/10.1088/0953-2048/19/4/L01", opturl="https://doi.org/10.1088/0953-2048/19/4/L01" }