Abstract
In compound semiconductor crystals with a substantial degree of ionicity Froelich interaction of charge carriers with longitudinal optical phonons is strong enough to produce detectable polaron effects. In this paper polaron effects are analyzed using a quantum theory of electron transport based on the momentum and frequency-dependent Wigner function ${f}_{w}(p,\ensuremath{\omega}),$ defined starting from the ${G}^{l}$ Green function, simply related to the electron spectral function $A(p,\ensuremath{\omega}).$ The theoretical approach considers the dynamical evolution of the electron Wigner function in presence of phonon scattering. An elaboration of the quantum dynamical equation in terms of Wigner paths formed by free flights and scattering events is used. These paths are especially suitable for a Monte Carlo solution of the transport equation for the Wigner function very similar to the semiclassical traditional Monte Carlo solution of the Boltzmann equation. Numerical results for GaAs and CdTe in a variety of physical conditions are presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
