Theory of huge tunneling magnetoresistance in graphene

Abstract

We investigate theoretically the spin-independent tunneling magnetoresistance effect in a graphene monolayer modulated by two parallel ferromagnets deposited on a dielectric layer. For the parallel magnetization configuration, Klein tunneling can be observed in the transmission spectrum, but at specific oblique incident angles. For the antiparallel magnetization configuration, the transmission can be blocked by the magnetic-electric barrier provided by the ferromagnets. Such a transmission discrepancy results in a tremendous magnetoresistance ratio and can be tuned by the inclusion of an electric barrier.

4 pages, 4 figures

References in corpus (7)

• Electric Field Effect in Atomically Thin Carbon Films
• Chiral tunneling and the Klein paradox in graphene
• Unconventional Integer Quantum Hall effect in graphene
• Selective transmission of Dirac electrons and ballistic magnetoresistance of \textit{n-p} junctions in graphene
• Transport measurements across a tunable potential barrier in graphene
• Magnetic confinement of massless Dirac fermions in graphene
• Effect of edge transmission and elastic scattering on the resistance of magnetic barriers

Cited by in corpus (11)

• Multiple magnetic barriers in graphene
• Electron optics with magnetic vector potential barriers in graphene
• Wavevector-dependent spin filtering and spin transport through magnetic barriers in graphene
• Design of electron wave filters in monolayer graphene by tunable transmission gap
• Quasi-bound states of Schrodinger and Dirac electrons in magnetic quantum dot
• Tunneling of multi-Weyl semimetals through a potential barrier under the influence of magnetic fields
• Transmission and conductance across junctions of isotropic and anisotropic three-dimensional semimetals
• Electronic transport in disordered graphene superlattices with scale-free correlated barrier spacements
• Effective Medium Model for Graphene Superlattices with Electrostatic and Magnetic Vector Potentials
• Gap-tunable of Tunneling Time in Graphene Magnetic Barrier
• Band structures and contact points in phosphorene superlattice