Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Suppression of Spin Pumping between Ni80Fe20 and Cu by a Graphene Interlayer

Published

Author(s)

William J. Gannett, Mark W. Keller, Hans T. Nembach, Thomas J. Silva, Ann C. Chiaramonti Debay

Abstract

Abstract We compare ferromagnetic resonance measurements of Py (Ni80Fe20) films sputtered onto Cu(111) with and without a graphene (Gr) interlayer grown by chemical vapor deposition before Py deposition. 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, much of the paper is concerned with ensuring that neither Gr nor Py is significantly degraded by the sample preparation process. We attribute the suppression of spin pumping in Py/Gr/Cu to the large contact resistance of the Gr/Cu interface.
Citation
Journal of Applied Physics
Volume
117
Issue
21

Keywords

ferromagnetic resonance, spin current, contact resistance, spin transfer, spin torque, spintronics, magnetic damping

Citation

Gannett, W. , Keller, M. , Nembach, H. , Silva, T. and Chiaramonti, A. (2015), Suppression of Spin Pumping between Ni80Fe20 and Cu by a Graphene Interlayer, Journal of Applied Physics, [online], https://doi.org/10.1063/1.4921425 (Accessed April 18, 2021)
Created June 7, 2015, Updated November 10, 2018