Phonon in a sentence

A beam splitter for phonons – the phonon enters a superposition state where it is both reflected and transmitted until it is detected.

They suggest their observations imply a new law-based on the solid-like electron properties involved with phonon scattering.

An alternative etymology is from φέρειν φόνον main, pherein phonon, "to bring (or cause) death".

Definition Quantum electrodynamics (QED) has one electron field and one photon field; quantum chromodynamics (QCD) has one field for each type of quark ; and, in condensed matter, there is an atomic displacement field that gives rise to phonon particles.

Except for high quality crystals at low temperatures, the phonon mean free path is not reduced significantly at higher temperatures.

However, the general correlation between electrical and thermal conductance does not hold for other materials, due to the increased importance of phonon carriers for heat in non-metals.

Indeed, its spatial scale is about where is effective mass of the exciton, is the exciton-phonon coupling constant, and is the characteristic frequency of optical phonons.

Metals however, are not restricted to only phonon-based heat conduction.

Phonon quasimomentum is defined as ℏq and differs from normal momentum because it is only defined within an arbitrary reciprocal lattice vector.

Phonon transport simulations indicate that substitutional defects such as nitrogen or boron will primarily lead to scattering of high-frequency optical phonons.

Thermal conductivity is usually described by the Boltzmann equation with the relaxation time approximation in which phonon scattering is a limiting factor.

The two most important anharmonic effects are the thermal expansion and the phonon thermal conductivity.

To U-process to occur the decaying phonon to have a wave vector q 1 that is roughly half of the diameter of the Brillouin zone, because otherwise quasimomentum would not be conserved.