Novel superconducting thermometer for bolometric applications

McDonald, D. G.
March 1987
Applied Physics Letters;3/23/1987, Vol. 50 Issue 12, p775
Academic Journal
The temperature dependence of the magnetic penetration depth in a superconductor, in the kinetic inductance limit, is proposed as a basis for a sensitive thermometer. Considered as a bolometer, the noise equivalent power from the sum of the Johnson noise and the preamplifier noise can be reduced to about 7×10-20 W/(Hz)1/2, which is approximately four orders of magnitude below currently realized values.


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