G4CMP for optical phonon-electron interaction

_Geant4 Version:_geant4-v11.2.0
_Operating System:_win11
_Compiler/Version:_Visual Studio Version 17.3.5
_CMake Version:_cmake-3.28.1

Hello everyone, I want to simulate optical phonon interaction with electron. Trying to examine the frequency dependence of photoresponsivity for 2D material. Is G4CMP library good choice for to do this? Is there any geant4 extended example like that? I am fully open your suggestions.

Thanks everyone.

I don’t think there’s a functional Geant4 example for this. The example that is there is based on very old code, and G4CMP has moved along since then.

G4CMP does not explicitly treat optical phonons, because it’s built around a “T=0” cryogenic assumption. We have phonon downconversion and mode mixing processes, which are proportional to high powers of frequency (f^5, f^4). So we assume in that simulation that a phonon with “optical” energy simply downconverts very, very fast, before we would have a chance to see the phonon’s effect on anything.

What you’re describing suggests that that assumption breaks down in your applications. Since G4CMP isn’t at all optimized for room temperature devices, it may not be appropriate for your use case.