Re: [Wien] calculation of electron-phonon coupling constant

2022-08-22 Thread Peter Blaha
With the telnes3 module you can calculate core-loss including relativistic effects and q-dependency. Eventually core-hole calculations are necessary. With the optic module also VLEED can be simulated. Standard problems of DFT (gap, missing excitonic effects) are of course present and can be par

Re: [Wien] calculation of electron-phonon coupling constant

2022-08-19 Thread Laurence Marks
Dear Matthew, I suggest that you better define your question. * Do you mean core losses, near-edge or extended, low loss, aloof spectroscopy or phonons? * Do you mean local and/or single atom as in STEM, or averaged? * Are you asking about ALCHEMI & simulations with dynamical terms being included?

Re: [Wien] calculation of electron-phonon coupling constant

2022-08-19 Thread Mathew Peet
Dear Peter, What's the possibility of and state of the art for calculation of energy loss spectra for electron microscopy? Best wishes, Mathew ___ Wien mailing list Wien@zeus.theochem.tuwien.ac.at http://zeus.theochem.tuwien.ac.at/mailman/listinfo

[Wien] ??????calculation of electron-phonon coupling constant

2022-08-18 Thread zhouchao via Wien
Thank you ,Prof.Peter Blaha.I only noticed the formula inside. The rationality of the data inside is really questionable. I will continue to study it again. Thank you very much.  --  -- ??:

Re: [Wien] calculation of electron-phonon coupling constant

2022-08-18 Thread Peter Blaha
Well, it was 20 years ago when I did such RMTA calculations and I cannot really remember all details. For the phase shift you have to look up the formulae and also for N1(1) I do at the moment not fully understand the details as given in the paper you cited. But for sure, all those quantities

[Wien] calculation of electron-phonon coupling constant

2022-08-18 Thread zhouchao via Wien
Dear Users of Wien2k I want to continue to ask about the calculation of electron ion scattering matrix element < I^2 >. As I can find some details in the https://wien.zeus.theochem.tuwien.ac.narkive.com/ffod74Mc/calculation-of-electron-phonon-coupling-constant. But I still have some problem. 1.W