ISSTT Proceedings

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The resistive transition of aluminium hot electron bolometer mixers with normal metal cooling banks

Authors:
A. H. Verbruggen, T. M. Klapwijk, W. Belzig, J. R. Gao
Abstract:
We perform a theoretical analysis based on the superconducting proximity-effect model for the resistive transition of an aluminium superconducting hot electron bolometer mixer when the cooling banks are in the normal state. We compare our calculated result with a recently reported measurement. Our calculation qualitatively reproduces the observed feature in which the resistance drops quickly around Tc with decreasing temperature, but saturates at a value roughly being one half of the normal state resistance. It also opens the question about which type of cooling banks (normal or superconductor) is favourably for low noise performance.
Categories:
HEB Mixers
Year:
2001
Session:
2
Full-text:
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Page Number(s):
42-46