Specific heat measurements have been made under pressure on a 5% 3He-4He solution between 10 and 93 mK, yielding values for the specific heat mass, m *, of 2.45 m 3, 2.74 m 3, and 3.07 m 3 at pressures of 0, 10, and 20 atm, respectively; corresponding values of the zero-concentration effective mass m 0 are 2.38 m 3, 2.64 m 3, and 2.90 m 3 for the above pressures. Measurements were also made on a 3% solution. Above 35 mK, all the measurements show deviations from a free-Fermi-gas behavior.
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This work was partially supported by the U.S.-Israel Binational Science Foundation (BSF), Jerusalem.
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Polturak, E., Rosenbaum, R. Specific heat of 5% and 3% 3He-4He solutions under pressure. J Low Temp Phys 43, 477–498 (1981). https://doi.org/10.1007/BF00115610
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DOI: https://doi.org/10.1007/BF00115610