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The electron-phonon coefficients g
are defined as
The phonon linewidth
is defined by
= 2    | g ( , i, j)|2 (e , i - eF) (e + , j - eF),
|
(2) |
while the electron-phonon coupling constant
for
mode
at wavevector
is defined as
=
|
(3) |
where N(eF)
is the DOS at the Fermi level.
The spectral function is defined as
The electron-phonon mass enhancement parameter
can also be defined as the first reciprocal momentum of
the spectral function:
Note that a factor M-1/2
is hidden in the definition of
normal modes as used in the code.
McMillan:
or (better?)
where
Next: About this document ...
Up: User's Guide for the
Previous: 6 Troubleshooting
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Layla Martin-Samos Colomer
2012-11-21