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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43 Citations (Scopus)


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

Bibliographical note

Funding Information:
A.K.P. and B.O. acknowledge support from the Singapore National Research Foundation Grant Nos. NRF-RF2008-07 and NUS-YIA (R144-000-283-101), and S.S., B.B. and E.d.B. from NSF (Grant No. DMR-0747587).

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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