دورية أكاديمية

Suppression of spin pumping between Ni80Fe20 and Cu by a graphene interlayer.

التفاصيل البيبلوغرافية
العنوان: Suppression of spin pumping between Ni80Fe20 and Cu by a graphene interlayer.
المؤلفون: Gannett, Will, Keller, Mark W., Nembach, Hans T., Silva, Thomas J., Chiaramonti, Ann N.
المصدر: Journal of Applied Physics; 6/7/2015, Vol. 117 Issue 21, p213907-1-213907-9, 9p, 3 Diagrams, 2 Charts, 8 Graphs
مصطلحات موضوعية: NICKEL alloys, IRON alloys, COPPER alloys, GRAPHENE, FERROMAGNETIC resonance, CHEMICAL vapor deposition
مستخلص: We compare ferromagnetic resonance measurements of Permalloy Ni80Fe20 (Py) films sputtered onto Cu(111) films with and without a graphene (Gr) interlayer grown by chemical vapor deposition before Py deposition. A two-angle sputtering method ensured that neither Gr nor Py was degraded by the sample preparation process. We find the expected damping enhancement from spin pumping for the Py/Cu case and no detectable enhancement for the Py/Gr/Cu case. Since damping is sensitive to effects other than spin pumping, we used magnetometry to verify that differences in Py magnetostatic properties are not responsible for the difference in damping. We attribute the suppression of spin pumping in Py/Gr/Cu to the large contact resistance of the Gr/Cu interface. [ABSTRACT FROM AUTHOR]
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قاعدة البيانات: Complementary Index
الوصف
تدمد:00218979
DOI:10.1063/1.4921425