It the static, somewhat confusedly called “high-frequency”, dielectric constant, only accounting for the electronic contribution. The ionic (vibrational) contribution should be added separately. SB ___ Stefano Baroni, Trieste -- http://stefano.baroni.me
> On 2 Dec 2023, at 20:01, Yu, Jingjing <[email protected]> > wrote: > > Dear QE experts, > > I would like to calculate the static dielectric constant by using the linear > response method. I already got some result by using the option of "epsil" of > ph.x code. The result in the output file has been attached. > I am wondering the dielectric constant result calculated here is the real > static dielectric constant (the sum of the ionic dielectric constant and > optical dielectric constant) or just the ionic contribution? > > If it is just the ionic dielectric constant, how can I obtain the static > dielectric constant? > > Any suggestion would be really appreciated! Thank you very much! > > Best regards, > Jingjing > > Leipzig University > Leipzig, Germany > <1.gif> > _______________________________________________ > The Quantum ESPRESSO community stands by the Ukrainian > people and expresses its concerns about the devastating > effects that the Russian military offensive has on their > country and on the free and peaceful scientific, cultural, > and economic cooperation amongst peoples > _______________________________________________ > Quantum ESPRESSO is supported by MaX (www.max-centre.eu) > users mailing list [email protected] > https://lists.quantum-espresso.org/mailman/listinfo/users _______________________________________________ The Quantum ESPRESSO community stands by the Ukrainian people and expresses its concerns about the devastating effects that the Russian military offensive has on their country and on the free and peaceful scientific, cultural, and economic cooperation amongst peoples _______________________________________________ Quantum ESPRESSO is supported by MaX (www.max-centre.eu) users mailing list [email protected] https://lists.quantum-espresso.org/mailman/listinfo/users
