Hi all,
I'm working on calculations related to electron-phonon interactions during thermionic emission in a 2D material, using ab initio methods. I've come across the electron-phonon coupling constant, a dimensionless parameter commonly used in deriving the superconducting transition temperature. I'm curious about how this parameter can be related to thermal electron emission.
I can calculate the Density of States for my material and I have the Fermi-Dirac distribution at the emission temperature. I'm considering that incorporating the electron-phonon coupling constant might allow me to calculate a term for the emission probability, which could then yield the thermionic emission rate but I don't know the term. Could anyone assist me with this approach? Your help would be greatly appreciated
Hi Mohammad,
I'm not very sure about what exactly you want to calculate, but if you want to compute electron-phonon coupling strengths or matrix elements from a full ab initio framework, you can use the EPW code (https://epw-code.org). There are several lectures and hands-on sessions on youtube if you want to learn about the methodologies and code usage.
Cheers,
Bruno