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The thermal conductivity of disordered and amorphous metal films

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von Löhneysen, H., & Steglich, F. (1978). The thermal conductivity of disordered and amorphous metal films. Zeitschrift für Physik B, 29(2), 89-100. doi:10.1007/BF01313192.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0019-BFD6-B
Abstract
The thermal conductivity of quenched condensed polycrystalline and amorphous Pb and Pb 0.9Cu 0.1 films has been measured between 0.5 and 11K, i.e. in the superconducting ( Tlsim7K) and in the normal state ( Tgsim7K). Whereas, in agreement with previous results, phonon heat transport is very small for crystalline films, a considerable portion of heat is carried by phonons in amorphous films, owing to the absence of extended lattice defects. Phonon scattering in these latter films is analyzed in terms of scattering from conduction electrons above Tc, whereas well below Tc, it is very likely due to low energy excitations inherent in the amorphous structure.