Effective mass in quasi two-dimensional systems

TL;DR

This paper analytically calculates the effective mass in quasi two-dimensional systems, revealing a sharp increase near the metal-insulator transition, indicating a Mott transition rather than an Anderson transition.

Contribution

It provides an analytical calculation of the effective mass behavior near the metal-insulator transition in quasi two-dimensional systems, highlighting a Mott transition mechanism.

Findings

Effective mass increases sharply near critical density.

Transition suggests a Mott type rather than Anderson.

Analytical approach to quasiparticle excitations.

Abstract

The effective mass of the quasiparticle excitations in quasi two-dimensional systems is calculated analytically. It is shown that the effective mass increases sharply when the density approaches the critical one of metal-insulator transition. This suggests a Mott type of transition rather than an Anderson like transition.