Results 271 to 280 of about 129,819 (311)
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PHONON-PHONON INTERACTION IN CRYSTALS
1963Abstract : The generation, propagation and interaction of phonons with emphasis on the phonon interaction in crystals were investigated. Several phonon phonon interaction processes in X-cut quartz, silicon and germanium were investigated. These involve forward traveling wave, backward traveling wave, frequency up conversion and harmonic generation ...
Stephen Wanuga, Walter Brouillette
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Phonon-phonon interactions in silicon
Czechoslovak Journal of Physics, 1996At low temperatures the acoustic properties of glasses differ from those of crystals. The anomalies can be explained by the existence of localized low-energy excitations with a broad distribution of energy and relaxation times. The dynamics of the excitations, also described as tunneling states (TS) is, on a phenomenological level, well understood for ...
C. Laermans, M. Coeck
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Phonons in III–V nitrides: Confined phonons and interface phonons
Physica E: Low-dimensional Systems and Nanostructures, 2001Abstract Phonons in III–V nitrides are examined experimentally for dimensionally confined systems and for alloys of InGaN with a view towards understanding the phonon modes of these systems. Results are compared with the predictions of Loudon's model for uniaxial semiconductors.
M Dutta +7 more
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1993
Abstract In this section, we discuss the interaction between the conduction electrons and the crystal lattice in a metal. At first glance it may seem that it should be possible to treat this interaction in a manner analogous to that used in the theory of radiation, where the full Hamiltonian contains free electron and photon fields, plus
Vladimir Z Kresin +2 more
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Abstract In this section, we discuss the interaction between the conduction electrons and the crystal lattice in a metal. At first glance it may seem that it should be possible to treat this interaction in a manner analogous to that used in the theory of radiation, where the full Hamiltonian contains free electron and photon fields, plus
Vladimir Z Kresin +2 more
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Phonons in a strongly coupled electron-phonon system
Physical Review B, 1991The theory of vibration excitations in a strongly coupled electron-phonon system is developed. The renormalization of phonon frequencies due to the strong electron-phonon interaction is obtained, taking into account the polaron narrowing of the electron band. Polaron-phonon interaction leads to a softening of the phonon frequencies and damping.
, Alexandrov, , Capellmann
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Phonon-phonon interaction and two-phonon Raman scattering in NaCl
Journal of Physics C: Solid State Physics, 1972The second order Raman spectrum of NaCl is calculated on the basis of a nonlinear shell model. Good agreement with experimental results is obtained with a two parameter model. The theory is developed to allow for certain of the interactions between the participating phonons and calculations show that these have a small effect on the room temperature ...
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Phonon-phonon interaction and phonon drag in potassium at low temperatures
Philosophical Magazine B, 1994Abstract The coupled Boltzmann equations for phonons and electrons in the low-temperature limit are solved through a perturbative method in which the phonon-phonon interaction is treated as a small perturbation. In this way it is possible to define the extension of the temperature range where phonon drag is effective, that is the range where the above ...
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Phonons and Electron–Phonon Interaction
2021Vitalii K. Dugaev, Vladimir I. Litvinov
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