Dynamic Spin Injection into Chemical Vapor Deposited Graphene

Abstract

We demonstrate dynamic spin injection into chemical vapor deposition (CVD) grown graphene by spin pumping from permalloy (Py) layers. Ferromagnetic resonance measurements at room temperature reveal a strong enhancement of the Gilbert damping at the Py/graphene interface, exceeding that observed in even Py/platinum interfaces. Similar results are also shown on Co/graphene layers. This enhancement in the Gilbert damping is understood as the consequence of spin pumping at the interface driven by magnetization dynamics. Our observations suggest a strong enhancement of spin-orbit coupling in CVD graphene, in agreement with earlier spin valve measurements.

13 pages and 3 figures

References in corpus (5)

• Electric Field Effect in Atomically Thin Carbon Films
• Direct electronic measurement of the spin Hall effect
• Ferromagnetic resonance study of sputtered Co|Ni multilayers
• Magnetization damping in polycrystalline Co ultra-thin films: Evidence for non-local effects
• Geometrical control of the magnetization direction in high aspect-ratio PdNi ferromagnetic nano-electrodes

Cited by in corpus (8)

• Graphene Spintronics
• Enhanced DC Spin Pumping into a Fluctuating Ferromagnet near Tc
• Theory of proximity-induced exchange coupling in graphene on hBN/(Co, Ni)
• Direct Observation of Unusual Interfacial Dzyaloshinskii-Moriya Interaction in Graphene/NiFe/Ta Heterostructure
• Photoinduced pure spin current injection in graphene with Rashba spin-orbit interaction
• Dynamical spin injection at a quasi-one-dimensional ferromagnet-graphene interface
• Spin pumping into two-dimensional electron systems
• Unified formulation of interfacial magnonic pumping from non-collinear magnets