acoustic phonon


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Related to acoustic phonon: Optical phonon

acoustic phonon

[ə′küs·tik ′fōn‚än]
(solid-state physics)
A quantum of excitation of an acoustic mode of vibration.
References in periodicals archive ?
The frequency shift is directly proportional to the acoustic phonon velocity, and for this reason, we shall consider below the behavior of the velocity rather than of the frequency shift.
The study is the first ever to prove that acoustic phonons -- the elemental particles that transmit both heat and sound -- have magnetic properties.