"function" in inglés with examples - Collocation dictionary inglés
- The dielectric function for metals with low absorption can be defined as:
- The contribution to the dielectric function from the total electric potential is assumed to average out, so that only the potential at wave vector k contributes.
- The optical dielectric function is given by the fundamental expression:
- This result is same as the classical dielectric function.
- Therefore the dielectric function for the incident photon energy below the band gap exist!
- This screening yields a dielectric function .
- Below the plasma frequency, the dielectric function is negative and the field cannot penetrate the sample.
- For the position of the dynamical image plane, it decreases with increasing dielectric function and is typically on the order of 0.2 Å.
- The oscillations can be described as an instability in the dielectric function of a free electron gas.
- This can be converted into a wavevector-dependent dielectric function:
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