On Fri, 29 Sep 2006, li quan wrote:
No, if you reduce eps, for smaller frequency phonons you will get el-ph in which you cannot trust, too large - as I wrote before. It is better to calculate some "grid" of phonons and use q2r and matdyn. Than you will get also small frequency phonons with a good result. You need to apply the accustic phonon sum rule. For optical phonons no problem. Gosia > Dear Polo, > Thanks for your and others' answers, you say that >> electron-phonon coefficients are seto to zero >> for phonons whose frequency is smaller than 20 cm^-1 > > But, if I want to get the value of electron-phonon coefficients for phonons > whose frequency is smaller than 20 cm^-1. What should I do? Could I reduce > the value of "eps"? > > Thanks in advance. > > gao >
