Low-temperature properties of thin films
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B.S. TosΜiΔ; J.P. SΜetrajcΜiΔ; D.Lj. MirjaniΔ; Z.V. Bundalo
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Article
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1992
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Elsevier Science
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English
β 435 KB
It is shown that phonons in this films, "cut off" from a simple lattice, possess a gap whose magnitude depends upon the thickness of the film. Due to the presence of the gap, the specific heat of the film for T~-0 changes approximately as T l exp(-const/T). This behaviour of the specific heat can be