- #1
nahira
- 7
- 0
Hi my expert friends,
I'm confused with these seemingly two contradictory statements:
1- Phonons are the quantized quasi-particles of the normal modes of lattice vibrations and we have Longitudinal (LA) and Transverse Acoustical (TA) Phonons and Longitudinal (LO) and Transverse Optical (TO) Phonons
2- de Broglie Matter waves are neither transverse nor longitudinal. They do not represent any physical oscillations and obviously wave solution for Ψ cannot have a polarization associated with it.
Can anyone explain, clearly, the associated phonons waves are those lattice normal modes of viberation (which can be either transverse or longitudinal) or they are hypothetical waves (which do not represent any real physical oscillations)?
Thank you in advance
I'm confused with these seemingly two contradictory statements:
1- Phonons are the quantized quasi-particles of the normal modes of lattice vibrations and we have Longitudinal (LA) and Transverse Acoustical (TA) Phonons and Longitudinal (LO) and Transverse Optical (TO) Phonons
2- de Broglie Matter waves are neither transverse nor longitudinal. They do not represent any physical oscillations and obviously wave solution for Ψ cannot have a polarization associated with it.
Can anyone explain, clearly, the associated phonons waves are those lattice normal modes of viberation (which can be either transverse or longitudinal) or they are hypothetical waves (which do not represent any real physical oscillations)?
Thank you in advance