Abstract
We calculate the specific heat of superfluid 3 He film thinner than the coherence length. In such a thin film, quantization on the confined direction makes eigenstates discrete, thus there appears a set of Fermi disks which are just like subband. Because of both the discreteness and ABM-like energy gap, the specific heat exhibits Schottky type character, which becomes conspicuous in special thin region.
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Furukawa, H., Ohmi, T. Superfluid 3He Thin Films with Specularly Reflecting Walls. Journal of Low Temperature Physics 121, 465–470 (2000). https://doi.org/10.1023/A:1017570217869
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DOI: https://doi.org/10.1023/A:1017570217869