title: Anatomy of Dzyaloshinskii-Moriya Interaction at Co/Pt Interfaces.
abstract: The Dzyaloshinskii-Moriya interaction (DMI) has been recently recognized to play a crucial role in allowing fast domain wall dynamics driven by spin-orbit torques and the generation of magnetic Skyrmions. Here, we unveil the main features and microscopic mechanisms of DMI in Co/Pt bilayers via first principles calculations. We find that the large DMI of the bilayers has a dominant contribution from the spins of the interfacial Co layer. This DMI between the interfacical Co spins extends very weakly away from the interface and is associated with a spin-orbit coupling in the adjacent atomic layer of Pt. Furthermore, no direct correlation is found between DMI and proximity induced magnetism in Pt. These results clarify the underlying mechanisms of DMI at interfaces between ferromagnetic and heavy metals and should help optimizing material combinations for domain wall and Skyrmion-based devices.
authors.affiliation: Univ. Grenoble Alpes, INAC-SPINTEC, 38000 Grenoble, France; CNRS, SPINTEC, 38000 Grenoble, France; and CEA, INAC-SPINTEC, 38000 Grenoble, France.|Laboratoire de Physique des Solides, Université Paris-Sud, CNRS UMR 8502, 91405 Orsay Cedex, France.
authors.forename: Hongxin
authors.initials: H
authors.lastname: Yang
authors.affiliation: Laboratoire de Physique des Solides, Université Paris-Sud, CNRS UMR 8502, 91405 Orsay Cedex, France.
authors.forename: André
authors.initials: A
authors.lastname: Thiaville
authors.affiliation: Laboratoire de Physique des Solides, Université Paris-Sud, CNRS UMR 8502, 91405 Orsay Cedex, France.
authors.forename: Stanislas
authors.initials: S
authors.lastname: Rohart
authors.affiliation: Unité Mixte de Physique CNRS/Thales, 1 Avenue Fresnel, 91767 Palaiseau, France and Université Paris-Sud, 91405 Orsay, France.
authors.forename: Albert
authors.initials: A
authors.lastname: Fert
authors.affiliation: Univ. Grenoble Alpes, INAC-SPINTEC, 38000 Grenoble, France; CNRS, SPINTEC, 38000 Grenoble, France; and CEA, INAC-SPINTEC, 38000 Grenoble, France.
authors.forename: Mairbek
authors.initials: M
authors.lastname: Chshiev