Abstract
It was found that very carefully prepared Na crystals gave quite large-amplitude de Haas-van Alphen oscillations, as if little or none of the metal had undergone the martensitic transformation in cooling to liquid helium temperatures. Detailed study of the absolute amplitude and the harmonic content of the oscillations gave the ratio of the spin susceptibility to that of a free electron gas as χ/χ0=1.632±0.007, the spin-splitting factor as g=2.636±0.024, and the parameterB 0 in Fermi liquid theory asB 0=−0.241±0.007. These determinations are appreciably more accurate than earlier ones, and are consistent with them and agree well with recent theoretical estimates. In the analysis of the observed oscillations it was necessary to take account of strong magnetic interaction effects, particularly at 0.6 K, and the results provide some evidence for a modified from of the theory of magnetic interaction in the presence of significant phase smearing.
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Perz, J.M., Shoenberg, D. Spin properties of conduction electrons in sodium. J Low Temp Phys 25, 275–297 (1976). https://doi.org/10.1007/BF00655833
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DOI: https://doi.org/10.1007/BF00655833