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qcl:input_file [2022/05/09 21:27] takuma.sato [Electromagnetic modes] |
qcl:input_file [2023/01/05 10:07] (current) thomas.grange [Scattering processes] |
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=== Optical phonons === | === Optical phonons === | ||
- | (optional) Sometimes it might be useful to investigate the influence of the longitudinal-optical (LO) phonon interaction in more detail. | + | (optional) Sometimes it might be useful to investigate the influence of the longitudinal-optical (LO) phonon interaction on the full NEGF simulation. |
- | Then one can artificially tune the coupling strength due to LO phonons. | + | Then one can artificially tune the LO-phonon scattering rates (self-energies in practice, or equivalently the square of the coupling to LO-phonons). |
- | The microscopic value of the LO phonon coupling strength is then multiplied by the scaling factor ''<LO_Phonon_Coupling_Strength>''. | + | The microscopic value of the square of the LO phonon matrix element is then multiplied by the scaling factor ''<LO_Phonon_Coupling_Strength>''. |
<code> | <code> | ||
<Tune_LO_Phonon_Scattering>yes</Tune_LO_Phonon_Scattering> | <Tune_LO_Phonon_Scattering>yes</Tune_LO_Phonon_Scattering> | ||
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<!-- 1.0 is the value of the normal calculation --> | <!-- 1.0 is the value of the normal calculation --> | ||
</code> | </code> | ||
+ | A value of 1.0 will have no effect, while larger (smaller) values will increase (decrease) the LO-phonon self-energy proportionally respectively. | ||
=== Charged impurities === | === Charged impurities === |