Theory of intraband transition linewidths due to LO phonon scattering in triangular well based on the many body projection method

摘要

Utilizing the state dependent projection technique, we derive a formula for intraband transition linewidths due to longitudinal optical phonon scattering for the electrons in a triangular potential well. We find for GaN that the absorption power is keenly affected by the screening in such a way that the power increases with the electron density. We also find that the linewidth increases with the temperature, but decreases with the electric field applied to the system.