Tunable magnetoresistance in spin-orbit coupled graphene junctions
arXiv:1808.03957 · doi:10.1016/j.jmmm.2018.10.125
Abstract
Using the Landauer-Bütikker formalism, we study the graphene magneto-transport in the presence of Rashba spin-orbit interaction (RSOI). We show that the angle resolved transmission probability in the proposed structures can be tuned by the RSOI strength. The transmission spectrum show Klein tunneling in the parallel (P) magnetization configuration which can be blocked by the RSOI. This effect is also observable for the anti-parallel (AP) magnetization configuration in different incident angle. The numerical results shows that the spin-polarized conductance strongly depends on the strength of the RSOI and can be generated by tuning the magnetic exchange field and RSOI strength. This spin-polarized conductance is a sensitive oscillatory function of the thickness of the RSO region. Because of the spin-flip effect, the junction shows a spin-valve effect with large and negative magnetoresistance (MR) and spin-magnetoresistance (SMR) in the presence of RSOI. When the RSOI is on, the frequency and amplitude of shot-noise and Fano factor's oscillations are also increased. These results can provide a way to extending the application of graphene-based junctions in spintronics.
References in corpus (38)
- Electric Field Effect in Atomically Thin Carbon Films
- The electronic properties of graphene
- Two-Dimensional Gas of Massless Dirac Fermions in Graphene
- Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
- Spintronics: Fundamentals and applications
- Quantum Spin Hall Effect in Graphene
- Graphene Photonics and Optoelectronics
- Half-Metallic Graphene Nanoribbons
- Graphene Spintronics
- Andreev reflection and Klein tunneling in graphene
- Intrinsic and Rashba Spin-orbit Interactions in Graphene Sheets
- Spintronics and Pseudospintronics in Graphene and Topological Insulators
- Spin-orbit coupling in curved graphene, fullerenes, nanotubes, and nanotube caps
- Spin-orbit gap of graphene: First-principles calculations
- Quantum-limited shot noise in graphene
- Spin-half paramagnetism in graphene induced by point defects
- Thermoelectric and Magnetothermoelectric Transport Measurements of Graphene
- Specular Andreev reflection in graphene
- Anisotropic behaviors of massless Dirac fermions in graphene under periodic potential
- Proximity-induced ferromagnetism in graphene revealed by anomalous Hall effect
- Spin-Orbit Proximity Effect in Graphene
- Rashba effect in the graphene/Ni(111) system
- Anomalous thermoelectric transport of Dirac particles in graphene
- Graphene Spin Valve Devices
- Giant magnetoresistance in ultra-small Graphene based devices
- Shot Noise in Ballistic Graphene
- Spin Electronics and Spin Computation
- Shot Noise in Graphene
- Theory of huge tunneling magnetoresistance in graphene
- Graphene-based electronic spin lenses
- Nonlocal Andreev Entanglements and Triplet Correlations in Graphene with Spin Orbit Coupling
- Spin-controlled superconductivity and tunable triplet correlations in graphene nanostructures
- Tunable Anomalous Andreev Reflection and Triplet Pairings in Spin Orbit Coupled Graphene
- MagnetoResistance of graphene-based spin valves
- Perpendicular spin valves with ultra-thin ferromagnetic layers
- Current-induced macrospin vs spin-wave excitations in spin valves
- Thermoelectric and thermospin transport in a ballistic junction of graphene
- Spin-dependent thermoelectric effects in graphene based superconductor junctions