如果设置lraman=.false.也可以算出Raman频率。
lraman是根据一篇文献M. Lazzeri and F. Mauri, Phys. Rev. Lett. 90, 036401 (2003)的上所说的second order derivative of the electronic density matrix with respect to a uniform electric field, using pseudopotentials and periodic boundary conditions。我想这可能是赝势受限制的地方。
另外,好像abinit也只能用NCPP?