Reduction of phonon mean free path: From low-temperature physics to room temperature applications in thermoelectricity
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چکیده
منابع مشابه
Universal phonon mean free path spectra in crystalline semiconductors at high temperature
Thermal conductivity in non-metallic crystalline materials results from cumulative contributions of phonons that have a broad range of mean free paths. Here we use high frequency surface temperature modulation that generates non-diffusive phonon transport to probe the phonon mean free path spectra of GaAs, GaN, AlN, and 4H-SiC at temperatures near 80 K, 150 K, 300 K, and 400 K. We find that pho...
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ژورنال
عنوان ژورنال: Comptes Rendus Physique
سال: 2016
ISSN: 1631-0705
DOI: 10.1016/j.crhy.2016.08.008