Transmission gaps from corrugations

TL;DR

This paper models how periodic corrugations in a nanostructure affect electron transmission, revealing transmission gaps and resonant tunneling domains that can be tuned by layer thickness for potential filter applications.

Contribution

It introduces a model analyzing the impact of corrugations on transmission probability, highlighting the emergence of transmission gaps and resonant tunneling domains in nanostructures.

Findings

Transmission gaps and resonant tunneling domains emerge due to corrugations.

Tunneling peaks and valleys are influenced by boundaries between regions with different effective masses.

Layer thickness can slightly modify the transmission characteristics.

Abstract

A model including a periodically corrugated thin layer with GaAs substrate is employed to investigate the effects of the corrugations on the transmission probability of the nanostructure. We find that transmission gaps and resonant tunneling domains emerge from the corrugations, in the tunneling domains the tunneling peaks and valleys result from the boundaries between adjacent regions in which electron has different effective masses, and can be slightly modified by the layer thickness. These results can provide an access to design a curvature-tunable filter.