Abbreviated Journal Title
Appl. Phys. Lett.
FERROMAGNETIC-RESONANCE; ROOM-TEMPERATURE; THIN-FILMS; TRANSPORT; DEVICES; Physics, Applied
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, indeed exceeding that observed in 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.
Applied Physics Letters
Patra, A. K.; Singh, S.; Barin, B.; Lee, Y.; Ahn, J. -H.; del Barco, E.; Mucciolo, E. R.; and Özyilmaz, B., "Dynamic spin injection into chemical vapor deposited graphene" (2012). Faculty Bibliography 2010s. 3124.