TY  - JOUR
AU  - Hajenius, M.
AU  - Baselmans, J. J. A.
AU  - Gao, J. R.
AU  - Klapwijk, T. M.
AU  - de Korte, P. A. J.
AU  - Voronov, B.
AU  - Gol'tsman, G.
PY  - 2004
DA  - 2004//
TI  - Low noise NbN superconducting hot electron bolometer mixers at 1.9 and 2.5 THz
T2  - Supercond. Sci. Technol.
JO  - Supercond. Sci. Technol.
SP  - S224-S228
VL  - 17
IS  - 5
KW  - NbN HEB mixers
AB  - NbN phonon-cooled hot electron bolometer mixers (HEBs) have been realized with negligible contact resistance between the bolometer itself and the contact structure. Using a combination of in situ cleaning of the NbN film and the use of an additional superconducting interlayer of a 10 nm NbTiN layer between the Au of the contact structure and the NbN film superior noise temperatures have been obtained as low as 950 K at 2.5 THz and 750 K at 1.9 THz. Here we address in detail the DC characterization of these devices, the interface transparencies between the bolometers and the contacts and the consequences of these factors on the mixer performance.
SN  - 0953-2048
UR  - http://stacks.iop.org/0953-2048/17/i=5/a=026?key=crossref.2534873069af97a4e5c7632cd593f69f
UR  - https://doi.org/10.1088/0953-2048/17/5/026
DO  - 10.1088/0953-2048/17/5/026
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=558), last updated on Tue, 18 May 2021 13:11:33 -0500
ID  - Hajenius_etal2004
ER  -