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19
votes
2answers
725 views

What is a phonon?

I am trying to understand intuitively what a phonon is, but for the moment I find it quite difficult (having a limited background in quantum mechanics, an undergraduate course in non-relativistic QM). ...
3
votes
4answers
876 views

Do we say that phonon has effective mass through its dispersion relation?

The effective mass is proportional to the second derivative of the dispersion relation d2k/dE2. Do we say that phonon have effective mass through it ? Spin wave have.
2
votes
0answers
101 views

Phonon-polariton literature resources? [closed]

What is a good resource for studying phonon-polaritons?