Properties of Many-Polaron in Fractional Dimensional Space

TL;DR

This paper investigates how polaron properties like binding energy and effective mass change with doping levels in fractional-dimensional space, using perturbation theory and screening corrections.

Contribution

It introduces a fractional-dimensional space approach combined with screening effects to analyze polaron properties, which is a novel method in this context.

Findings

Effective mass decreases with doping

Binding energy decreases with doping

Screening effects significantly influence polaron properties

Abstract

Polaron binding energy and effective mass are calculated in the fractional-dimensional space approach using the second-order perturbation theory. The effect of carrier density on the static screening correction of the electron-phonon interaction is calculated using the Hubbard's local field factor. It is found that the effective mass and the binding energy both decrease with increase in doping.