Excitonic condensation

Purpose: Developing mean-field theory for a 2D two-band model including electron – phonon interaction and the extended Falicov-Kimball model involving electron/hole – phonon interaction. Studying the properties of electronic systems in EI state through investigating the above models. Then, we compare the nature of each condensation state on both sides of the BCS – BEC crossover or the competition with the CDW state.

27p extraenglish 24-05-2021 16 5   Download

Thesis focus on the problem of “Excitonic condensation in semimetal – semiconductor transition systems” to investigate the nature of the excitonic condensation state in these models by using MF theory. Electronic correlation in the systems is described by the two-band model including electron – phonon interaction and the extended Falicov-Kimball model involving electron – phonon interaction.

27p larachdumlanat129 20-01-2021 14 4   Download