Preferred Label : phonon;
IUPAC definition : Elementary excitation in the quantum mechanical treatment of vibrations in a crystal
lattice. An energy bundle that behaves as a particle of energy hν, with ν the vibration
frequency and h the Planck constant.;
Scope note : for example, interactions between phonons and electrons are thought to be responsible
for such phenomena as superconductivity.; the concept of phonons provides a simplification in the theories of thermal and electrical
conduction in solids.; every harmonic vibration can be decomposed in phonons, which are the elementary vibrations.
the total number of phonons in a system that has internal vibrations (e.g., a crystal)
is related to the temperature of the system.; a phonon can be considered as an acoustic mode of thermal vibration of a crystal lattice
(or liquid helium ii).;
Origin ID : P04547;
Currated CISMeF NLP mapping
- See also
Elementary excitation in the quantum mechanical treatment of vibrations in a crystal
lattice. An energy bundle that behaves as a particle of energy hν, with ν the vibration
frequency and h the Planck constant.
