Effective mass of liquid 3He using the melting curve data

Chaddah, P. ; Simmons, R. O. (1980) Effective mass of liquid 3He using the melting curve data Journal of Physics C: Solid State Physics, 13 (31). L895-L900. ISSN 0022-3719

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Official URL: http://iopscience.iop.org/0022-3719/13/31/004

Related URL: http://dx.doi.org/10.1088/0022-3719/13/31/004


Measurements of dp/dt and of the liquid and solid molar volumes along the melting curve of 3He can be used to obtain information about the Fermi liquid parameter Ef=pf2/2m of liquid 3He. The authors use data at temperatures reasonably far above the Neel temperature of the solid, but low enough so that the first finite-temperature correction term in Fermi liquid theory is not large. It is shown that, in spite of uncertainties in the solid 3He entropy because of uncertainties in the knowledge of the exchange mechanism, the melting curve data provide a check on the different sets of values for m quoted in literature. The authors also discuss the possible effect of ground state vacancies, whose existence in BCC 3He has been speculated on this analysis.

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