Dynamic spin injection into chemical vapor deposited graphene

A. K. Patra, S. Singh, B. Barin, Y. Lee, Jong-Hyun Ahn, E. Del Barco, E. R. Mucciolo, B. Özyilmaz

Research output: Contribution to journalArticle

30 Citations (Scopus)

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.

Original languageEnglish
Article number162407
JournalApplied Physics Letters
Volume101
Issue number16
DOIs
Publication statusPublished - 2012 Oct 15

Fingerprint

spin dynamics
graphene
Permalloys (trademark)
vapors
injection
augmentation
pumping
damping
vapor deposition
ferromagnetic resonance
platinum
orbits
magnetization
room temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Patra, A. K., Singh, S., Barin, B., Lee, Y., Ahn, J-H., Del Barco, E., ... Özyilmaz, B. (2012). Dynamic spin injection into chemical vapor deposited graphene. Applied Physics Letters, 101(16), [162407]. https://doi.org/10.1063/1.4761932
Patra, A. K. ; Singh, S. ; Barin, B. ; Lee, Y. ; Ahn, Jong-Hyun ; Del Barco, E. ; Mucciolo, E. R. ; Özyilmaz, B. / Dynamic spin injection into chemical vapor deposited graphene. In: Applied Physics Letters. 2012 ; Vol. 101, No. 16.
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Patra, AK, Singh, S, Barin, B, Lee, Y, Ahn, J-H, Del Barco, E, Mucciolo, ER & Özyilmaz, B 2012, 'Dynamic spin injection into chemical vapor deposited graphene', Applied Physics Letters, vol. 101, no. 16, 162407. https://doi.org/10.1063/1.4761932

Dynamic spin injection into chemical vapor deposited graphene. / Patra, A. K.; Singh, S.; Barin, B.; Lee, Y.; Ahn, Jong-Hyun; Del Barco, E.; Mucciolo, E. R.; Özyilmaz, B.

In: Applied Physics Letters, Vol. 101, No. 16, 162407, 15.10.2012.

Research output: Contribution to journalArticle

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AU - Patra, A. K.

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AU - Barin, B.

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AU - Ahn, Jong-Hyun

AU - Del Barco, E.

AU - Mucciolo, E. R.

AU - Özyilmaz, B.

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AB - 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.

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Patra AK, Singh S, Barin B, Lee Y, Ahn J-H, Del Barco E et al. Dynamic spin injection into chemical vapor deposited graphene. Applied Physics Letters. 2012 Oct 15;101(16). 162407. https://doi.org/10.1063/1.4761932