Title

Dynamic spin injection into chemical vapor deposited graphene

Authors

Authors

A. K. Patra; S. Singh; B. Barin; Y. Lee; J. H. Ahn; E. del Barco; E. R. Mucciolo;B. Ozyilmaz

Comments

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Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

FERROMAGNETIC-RESONANCE; ROOM-TEMPERATURE; THIN-FILMS; TRANSPORT; DEVICES; Physics, Applied

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, 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. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4761932]

Journal Title

Applied Physics Letters

Volume

101

Issue/Number

16

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

4

WOS Identifier

WOS:000310669300046

ISSN

0003-6951

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