Wavevector filtering through single-layer and bilayer graphene with magnetic barrier structures

TL;DR

This paper demonstrates how magnetic barrier structures in single-layer and bilayer graphene can effectively control the angular transmission range, enabling wavevector filtering with tunable properties influenced by the number of barriers.

Contribution

It introduces a method to tune transmission angles and energy gaps in graphene using magnetic barriers, advancing wavevector filtering technology.

Findings

Transmission range decreases with more barriers

Wider energy gaps form as barriers increase

Conductance oscillates with Fermi energy

Abstract

We show that the angular range of the transmission through magnetic barrier structures can be efficiently controlled in single-layer and bilayer graphenes and this renders the structure's efficient wavevector filters. As the number of magnetic barriers increases, this range shrinks, the gaps in the transmission versus energy become wider, and the conductance oscillates with the Fermi energy.