Electron-beam propagation in a two-dimensional electron gas

TL;DR

This paper presents a quantum mechanical model to analyze electron-beam propagation in a 2D electron gas, incorporating scattering and temperature effects to match experimental interference patterns.

Contribution

It introduces a Green's function-based model that accounts for scattering potentials and temperature effects, providing detailed insights into electron behavior in 2D electron gases.

Findings

Detailed scattering potential characteristics obtained

Interference patterns accurately reproduced

Insights into electron distribution and energetics

Abstract

A quantum mechanical model based on a Green's function approach has been used to calculate the transmission probability of electrons traversing a two-dimensional electron gas injected and detected via mode-selective quantum point contacts. Two-dimensional scattering potentials, back-scattering, and temperature effects were included in order to compare the calculated results with experimentally observed interference patterns. The results yield detailed information about the distribution, size, and the energetic height of the scattering potentials.