Magnetic superconfinement of Dirac fermions zero-energy modes in bilayer graphene quantum dots

TL;DR

This paper demonstrates how inhomogeneous magnetic fields can confine zero-energy Dirac fermion modes in bilayer graphene, enabling the creation of mesoscopic structures with restricted electron transmission.

Contribution

It introduces a novel magnetic confinement technique for Dirac fermions in bilayer graphene using nonuniform magnetic fields.

Findings

Zero-energy modes can be confined using tailored magnetic fields.

Magnetic confinement prevents transmission to adjacent regions.

This method enables design of mesoscopic graphene structures.

Abstract

We show that in bilayer graphene it is possible to achieve a very restrictive confinement of the massless Dirac fermions zero-modes by using inhomogeneous magnetic fields. Specifically, we show that, using a suitable nonuniform magnetic fields, the wave function may be restricted to a specific region of the space, being forbidden all transmission probability to the contiguous regions. This allows to construct mesoscopic structures in bilayer graphene by magnetic fields configurations.