DielectricFunction¶

class py4vasp.raw.DielectricFunction(energies: ~py4vasp._raw.data_wrapper.VaspData, dielectric_function: ~py4vasp._raw.data_wrapper.VaspData, current_current: ~py4vasp._raw.data_wrapper.VaspData = <factory>)¶

Bases: object

The full frequency-dependent dielectric function.

The total dielectric function is the sum of the ionic and electronic part. It provides insight into optical properties such as the reflectivity and absorption. Note that the dielectric function is a 3x3 matrix for every frequency. There are many different levels of theory with which you can evaluate the dielectric function in VASP. For the electronic dielectric function a current-current response may be provided as alternative.