Nonlinear interaction of spin and charge currents in graphene

Abstract

We describe a nonlinear interaction between charge currents and spin currents which arises from the energy dependence of the conductivity. This allows nonmagnetic contacts to be used for measuring and controlling spin signals. We choose graphene as a model system to study these effects and predict its magnitudes in nonlocal spin valve devices. The ambipolar behavior of graphene is used to demonstrate amplification of spin accumulation in p-n junctions by applying a charge current through nonmagnetic contacts.

minor changes, 4 pages, 3 figures

References in corpus (8)

• The electronic properties of graphene
• Thermoelectric and Magnetothermoelectric Transport Measurements of Graphene
• Tunneling Spin Injection into Single Layer Graphene
• Tunneling Spin Injection into Single Layer Graphene (Supplementary Information)
• Mobility and Saturation Velocity in Graphene on SiO2
• Electronic spin drift in graphene field effect transistors
• Impurity Scattering and Mott's Formula in Graphene
• Giant Spin-Hall Effect induced by Zeeman Interaction in Graphene

Cited by in corpus (18)

• Graphene Spintronics
• Colloquium: Spintronics in graphene and other two-dimensional materials
• Spintronics with graphene
• Onsager Relations in Coupled Electric, Thermoelectric and Spin Transport: The Ten-Fold Way
• 98% directional guiding of spin currents with 90 micrometer relaxation length in bilayer graphene using carrier drift
• Non-linear spin Seebeck effect due to spin-charge interaction in graphene
• Photoinduced pure spin current injection in graphene with Rashba spin-orbit interaction
• Spin transport in graphene nanostructures
• Independent geometrical control of spin and charge resistances in curved spintronics
• Transition between 1D and 0D spin transport studied by Hanle precession
• Non-linear spin to charge conversion in mesoscopic structures
• Non-linear spin transport in a rectifying ferromagnet/semiconductor Schottky contact
• Carrier Drift Control of Spin Currents in Graphene-Based Spin-Current Demultiplexers
• Nonlinear analog spintronics with van der Waals heterostructures
• Oblique spin injection to graphene via geometry controlled magnetic nanowires
• Large spin signal and spin rectification in folded-bilayer graphene
• Spin polarised quantised transport via one-dimensional nanowire-graphene contacts
• Correlation effects in disordered conductors with spin accumulation