Significant Dzyaloshinskii–Moriya interaction at graphene–ferromagnet interfaces due to the Rashba effect

Abstract : The possibility of utilizing the rich spin-dependent properties of graphene has attracted much attention in the pursuit of spintronics advances. The promise of high-speed and low-energy-consumption devices motivates the search for layered structures that stabilize chiral spin textures such as topologically protected skyrmions. Here we demonstrate that chiral spin textures are induced at graphene/ferromagnetic metal interfaces. Graphene is a weak spin–orbit coupling material and is generally not expected to induce a sufficient Dzyaloshinskii–Moriya interaction to affect magnetic chirality. We demonstrate that indeed graphene does induce a type of Dzyaloshinskii–Moriya interaction due to the Rashba effect. First-principles calculations and experiments using spin-polarized electron microscopy show that this graphene-induced Dzyaloshinskii–Moriya interaction can have a similar magnitude to that at interfaces with heavy metals. This work paves a path towards two-dimensional-material-based spin–orbitronics.
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-01817003
Contributor : Mairbek Chshiev <>
Submitted on : Friday, June 15, 2018 - 11:44:39 PM
Last modification on : Thursday, April 4, 2019 - 9:44:02 AM

Links full text

Identifiers

Collections

Citation

Hongxin Yang, Gong Chen, Alexandre Cotta, Alpha N’diaye, Sergey Nikolaev, et al.. Significant Dzyaloshinskii–Moriya interaction at graphene–ferromagnet interfaces due to the Rashba effect. Nature Materials, Nature Publishing Group, 2018, 17, pp.605-609. ⟨https://www.nature.com/articles/s41563-018-0079-4⟩. ⟨10.1038/s41563-018-0079-4⟩. ⟨hal-01817003⟩

Share

Metrics

Record views

195