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Showing 1 to 3 of 3 for “"phonon attenuation"”.
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Spectroscopic perspectives on ultrafast coupling phenomena in perovskite oxides
… I focus on the observation of coherent phonon propagation by time resolved Brillouin scattering: following the excition of metal transducer films with a femtosecond infrared pump pulse, coherent phonon dynamics in the GHz frequency range are triggered. Their propagation is monitored …
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Thermal boundary resistance
… has peen modified so as to include the effect of phonon attenuation near the interface. The modified theory is in good agreement below 0.2 K with present measurements on metal-dielectric interfaces and with previous measurements at liquid He-solid interfaces. The influence of the electron-phonon …
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The Kapitza resistance at metal-helium interfaces
… mismatch theory modified so as to include phonon attenuation in the metal. Below 0.1 K the Kapitza resistance of liquid 3He is often reduced relative to that of liquid 4He , suggesting the presence of an enhanced thermal conductance between liquid 3He and metals, as has been observed in …