Hammel, P. C. and Roukes, M. L. and Hu, Y. and Gramila, T. J. and Mamiya, T. and Richardson, R. C. (1983) Magnetic Coupling between 3He and 19F at Low Temperatures. Physical Review Letters, 51 (23). pp. 2124-2127. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:HAMprl83
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Measurements of relaxation phenomena between liquid 3He and 19F nuclei in small fluorocarbon particles are reported. Magnetic cross relaxation between the 19F in the substrate and the liquid is observed in measurements between 1 K and 0.6 mK. The spin temperatures remain strongly coupled in magnetic fields up to 125 mT. Moreover it is observed that there is a decrease in magnetic relaxation time at the onset of superfluidity in the liquid 3He and that the thermal relaxation times are remarkably short at all temperatures.
|Additional Information:||©1983 The American Physical Society Received 14 October 1983 We wish to acknowledge many useful conversations with Bob Silsbee, Maurice Chapellier, and Alain Schuhl about the coupling between the l9F and the 3He in these particles. We would also like to thank Peter Gammel for the construction of the 3He melting-curve thermometer which was used in these experiments. This research was supported through a contract with the Office of Naval Research and by the Cornell Materials Science Center through the National Science Foundation Grant No. DMR 82-17227. See Also: Erratum: P. C. Hammel, M. L. Roukes, Y. Hu, T. J. Gramila, T. Mamiya, and R. C. Richardson, Magnetic Coupling between 3He and 19F at Low Temperatures, Phys. Rev. Lett. 52, 1464 (1984).|
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