TY  - CONF
AU  - Klapwijk, T. M.
AU  - Barends, R.
AU  - Gao, J. R.
AU  - Hajenius, M.
AU  - Baselmans, J. J. A.
PY  - 2004
DA  - 2004//
TI  - Improved superconducting hot-electron bolometer devices for the THz range
T2  - Proc. SPIE
BT  - Proc. SPIE
SP  - 129
EP  - 139
VL  - 5498
KW  - HEB mixer distributed model
KW  - numerical model
AB  - Improved and reproducible heterodyne mixing (noise temperatures of 950 K at 2.5 THz) has been realized with NbN based hot-electron superconducting devices with low contact resistances. A distributed temperature numerical model of the NbN bridge, based on a local electron and a phonon temperature, has been used to understand the physical conditions during the mixing process. We find that the mixing is predominantly due to the exponential rise of the local resistivity as a function of electron temperature.
N1  - Invited talk, Recommended by Klapwijk
ID  - Klapwijk_etal2004
ER  -