I am doing phonon calculation of graphene. I am using 16x16x1 q-point grid. Which results in 30 high symm points. The kinetic energy and charge density are 40 and 480 Ry res. The k-point grid is also 16x16x1. so i just want to ask, whether is it meaningful to do calculation with higher precision to obtain the dynamical matrices *.dyn1 and *.dyn2 using 36x36x1 and 100, 2800 Ry. i want higher precision for just low q modes. But calculating the whole phonon dispersion with the later parameters is computationaly too much expensive. Any suggesion will be helpful. Thanks
-- Dr. Bipul Rakshit Research Associate, S N Bose Centre for Basic Sciences, Salt Lake, Kolkata 700 098 India
