Low-temperature nuclear magnetic resonance with a dc SQUID amplifier

Freeman, M. R.; Germain, R. S.; Richardson, R. C.; Roukes, M. L.; Gallagher, W. J.; Ketchen, M. B.
January 1986
Applied Physics Letters;1/27/1986, Vol. 48 Issue 4, p300
Academic Journal
We report the detection of nuclear magnetic resonance at 4 K and 1.9 MHz with a receiver based on a thin-film dc superconducting quantum interference device. The noise temperature of the spectrometer is 300 mK, limited by the second stage amplifier.


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