Abstract
We demonstrate the anomalous Hall effect (AHE) in single-layer graphene exchange coupled to an atomically flat yttrium iron garnet (YIG) ferromagnetic thin film. The anomalous Hall conductance has magnitude of at low temperatures and is measurable up to . Our observations indicate not only proximity-induced ferromagnetism in graphene/YIG with a large exchange interaction, but also enhanced spin-orbit coupling that is believed to be inherently weak in ideal graphene. The proximity-induced ferromagnetic order in graphene can lead to novel transport phenomena such as the quantized AHE which are potentially useful for spintronics.
- Received 28 May 2014
DOI:https://doi.org/10.1103/PhysRevLett.114.016603
© 2015 American Physical Society
Synopsis
Magnetic Graphene
Published 7 January 2015
Placing graphene on an insulating magnetic substrate can make the material ferromagnetic without disturbing its exceptional conductivity.
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