Tunable Dot Platform for Controlling Electron Flow in Graphene

TL;DR

This paper presents a tunable graphene-based dot platform that uses adjustable gated dots and multiscattering effects to precisely control electron flow, enabling advanced electronic and electron optic device functionalities.

Contribution

The study introduces a novel tunable dot platform in graphene that employs differential evolution optimization for controlling electron currents based on tailored scattering configurations.

Findings

Demonstrated control of electron flow via dot configuration optimization

Achieved directed and split electron beams in graphene

Showed potential for next-generation electronic devices

Abstract

We introduce an innovative graphene-based architecture to control electronic current flows. The tunable dot platform (TDP) consists of an array of gated dots, with independently adjustable potentials, embedded in graphene. Inspired by Mie theory, and leveraging multiscattering effects, we demonstrate that tailored current behavior can be achieved due to the variety of possible dot configurations. Optimization is performed using differential evolution, which identifies configurations that maximize specific objectives, such as directing or splitting an electron beam by tuning the angular dependence of scattering. Our results demonstrate the potential of the TDP to provide precise control over induced current flows in graphene, making it a promising component for next-generation electronic and electron optic devices.