Dzyaloshinskii-Moriya interaction at disordered interfaces from ab initio theory: Robustness against intermixing and tunability through dusting
Abstract
The Dzyaloshinskii-Moriya interaction (DMI), which is essential for the stabilization of topologically non-trivial chiral magnetic textures such as skyrmions, is particularly strong in heterostructures of ultra-thin magnetic materials and heavy elements. We explore by density-functional theory calculations the possibility to modify the magnetic properties at Co/Pt interfaces with chemical disorder. In these systems, we find a particular robustness of the DMI against intermixing. Upon dusting the interface with a third element (all 4d transition metals and B, Cu, Au, and Bi), a strong reduction of the DMI is predicted. This opens up possibilities to tune the DMI through the degrees of intermixing and dusting.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 03, 2018
- Source ID
- 10.1063/1.5049876
Entities
People
- Albert Fert
- Bernd Zimmermann
- Davide Maccariello
- Nicolas Reyren
- Stefan Blügel
- Vincent Cros
- William Legrand
Organizations
- Defense Advanced Research Projects Agency
- German Academic Exchange Service
- Horizon 2020
- Jülich Supercomputing Centre
- RWTH Aachen University
- Thales Group