Phonons can scatter through several mechanisms as they travel through the material. These scattering mechanisms are: Umklapp phonon-phonon scattering...

potential scattering or an anharmonic phonon-phonon (or electron-phonon) scattering process, reflecting an electronic state or creating a phonon with a momentum...

processes are scattering from acoustic phonons, impurity scattering, piezoelectric scattering, etc. In acoustic phonon scattering, electrons scatter from state...

models of neutron scattering and related effects. The concept of phonons was introduced in 1932 by Soviet physicist Igor Tamm. The name phonon comes from the...

Brillouin scattering involves the scattering of photons by low frequency phonons providing information regarding elastic properties. Optical phonons and molecular...

apparent below). Here, the + corresponds to phonon emission and – for phonon absorption during the scattering event. A note, because q ⊥ u ( r , t ) {\displaystyle...

low-frequency phonons of long wavelength will be limited in relaxation length by elastic Rayleigh scattering. This type of light scattering from small particles...

surface phonon scattering, which have an energy range of 10−3 eV to 1 eV. In EELS, an electron of known energy is incident upon the crystal, a phonon of some...

well below the resonance frequency of the scattering medium (normal dispersion regime), the amount of scattering is inversely proportional to the fourth...

graphene reduces a lot its thermal conductivity due to phonon scattering effect. Scattering of phonons result from both acoustic mismatch and reduced symmetry...

crossing principle. Phonon polariton spectra have traditionally been studied using Raman spectroscopy. The recent advances in (scattering-type) scanning near-field...

contribution is most important in the temperature region where phonon-electron scattering is predominant. This happens for T ≈ 1 5 θ D {\displaystyle T\approx...

In physics, Raman scattering or the Raman effect (/ˈrɑːmən/) is the inelastic scattering of photons by matter, meaning that there is both an exchange of...

the atomic number density. Slack phonon conductivity model mainly considering acoustic phonon scattering (three-phonon interaction) is given as k p = k...

neighboring atoms, while Brillouin scattering results from the scattering of photons caused by large scale, low-frequency phonons. The effects of the two phenomena...

_{q}}}|q|^{2}(n_{q}+1)&(k'=k-q;{\text{emission}}).\end{cases}}} Phonon scattering Umklapp scattering Hamaguchi, Chihiro (2017). Basic Semiconductor Physics. Graduate...

diffusive, or based on scattering. When ballistic in nature conductance can be treated as if the electrons experience no scattering. Conduction in single-walled...

phonons available for drag, and at higher temperatures they tend to lose momentum in phonon-phonon scattering instead of phonon-electron scattering....

other scattering mechanisms which apply to different carriers that are not considered here (e.g. remote interface phonon scattering, Umklapp scattering)....

As the wire diameter is reduced, the phonon boundary scattering dominates over phonon–phonon Umklapp scattering, which decreases the thermal conductivity...

the band-gap minimum. Typical mechanisms are Coulomb scattering and the interaction with phonons. Finally, the electrons recombine with holes under emission...

Compton effect Nonlinear optics Acousto-optic modulator Electron phonon scattering Dirac delta function, mathematical abstraction of a pure impulse One-way...

scattered particle. In some simple cases as phonon scattering and a parabolic dispersion relation, the scattering angle is random and evenly distributed on...

The zero-phonon line and the phonon sideband jointly constitute the line shape of individual light absorbing and emitting molecules (chromophores) embedded...

via interactions between the elementary excitations, such as "phonon-phonon scattering". Therefore, using quasiparticles / collective excitations, instead...

electron-phonon scattering decreases. The resistivity should rapidly plateau when the temperature drops below the Debye temperature of the phonons, below...

velocity saturates due to scattering from optical phonons. A higher optical phonon energy results in fewer optical phonons at a particular temperature...

is sometimes considered a sub-set of X-ray scattering, where the scattering is elastic and the scattering object is crystalline, so that the resulting...

measurement of such a surface phonon dispersion curve was reported in 1981, leading to a renewed interest in helium atom scattering applications, particularly...

the size of the resistive element becomes shorter than the electron–phonon scattering length. Where current divides between two (or more) paths, noise occurs...