Dynamic spin injection into chemical vapor deposited graphene

A. K. Patra, S. Singh, B. Barin, Y. Lee, J. H. Ahn, E. Del Barco, E. R. Mucciolo, B. Özyilmaz

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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.

Original languageEnglish
Article number162407
JournalApplied Physics Letters
Issue number16
Publication statusPublished - 2012 Oct 15

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Patra, A. K., Singh, S., Barin, B., Lee, Y., Ahn, J. H., Del Barco, E., Mucciolo, E. R., & Özyilmaz, B. (2012). Dynamic spin injection into chemical vapor deposited graphene. Applied Physics Letters, 101(16), [162407]. https://doi.org/10.1063/1.4761932