Kapitza transmission through atomically clean silicon (111) surfaces

Wichert, K. H.; Reimann, C.T.; Blahusch, G.; Kinder, H.

doi:10.1016/0921-4526(95)00842-x

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…Let us also stress that the reflection coefficients (deduced here from the knowledge of the Green's function) are useful quantities in calculating the thermal transport between a solid and a multilayered medium instead of a solid±solid [40] interface. Our calculation can also be easily extended to the case of a multilayer±liquid interface [32,41,42].…”

Section: Resultsmentioning

confidence: 99%

Sagittal Elastic Waves at the Interface between a Superlattice and a Substrate: Theoretical Analysis of the Density of States and Reflection Coefficientsrik

Bria

Boudouti

Nougaoui

et al. 2000

phys. stat. sol. (b)

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We investigate the existence and behavior of localized and resonant acoustic modes of sagittal polarization associated with the interface between a superlattice (SL) and a substrate. These modes appear as well‐defined peaks in the density of states, either inside the minigaps or inside the bulk bands of the SL and the substrate. It is shown that the interface modes strongly depend on the acoustic impedances of the substrate. Furthermore, a phonon incident on the superlattice from a substrate is partially reflected in the substrate, therefore the amplitudes and the phases of the reflection coefficients enable us to deduce the frequency ranges of the bulk bands and the minigaps of the superlattice as well as the frequency levels of the interface resonant modes. The densities of states and reflection coefficients, which are calculated as function of the frequency ω and the wave vector k∥(parallel to the interfaces), are obtained from an analytical determination of the Green's function for the superlattice/substrate interface. Specific application of our analytical results are given for a W/Al isotropic superlattice in contact with a substrate with different acoustic impedances.

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Section: Resultsmentioning

confidence: 99%

Sagittal Elastic Waves at the Interface between a Superlattice and a Substrate: Theoretical Analysis of the Density of States and Reflection Coefficientsrik

Bria

Boudouti

Nougaoui

et al. 2000

phys. stat. sol. (b)

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Ballistic phonon transmission across wafer-bonded crystals

Msall

Klimashov

Kronmüller

et al. 1999

Applied Physics Letters

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We have studied phonon transmission through wafer-bonded GaAs–GaAs interfaces using the techniques of phonon imaging. The short wavelength phonons used for imaging (λ≈10 nm) are an extremely sensitive probe of the bond. We report unprecedented transmission of phonons through carefully prepared bonds. This transmission is remarkable since strong phonon scattering is usually observed at virtually any free surface. The dramatic differences between phonon transmission through well bonded interfaces and phonon transmission through poorly bonded interfaces are the basis of an easily determined quality factor of the bond. In contrast to electron microscopy, the phonon measurements of bond quality are not destructive.

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Transmission ofL-mode phonons from a superlattice into a liquid by effective acoustic impedance matching

Kato

1999

Phys. Rev. B

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Kapitza transmission through atomically clean silicon (111) surfaces

Cited by 4 publications

References 5 publications

Sagittal Elastic Waves at the Interface between a Superlattice and a Substrate: Theoretical Analysis of the Density of States and Reflection Coefficientsrik

Sagittal Elastic Waves at the Interface between a Superlattice and a Substrate: Theoretical Analysis of the Density of States and Reflection Coefficientsrik

Ballistic phonon transmission across wafer-bonded crystals

Transmission ofL-mode phonons from a superlattice into a liquid by effective acoustic impedance matching

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