Berlin 2018 – scientific programme

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MA: Fachverband Magnetismus

MA 15: INNOMAG e.V. Diploma-/Master Prize 2018

MA 15.2: Invited Talk

Monday, March 12, 2018, 17:15–17:35, H 0112

Uncovering Chiral and Topological Orbital Magnetism of Domain Walls and Skyrmions
— •Fabian R. Lux —
Peter Grünberg Institut and Institute for Advanced Simulation,
Forschungszentrum Jülich and JARA, 52425 Jülich, Germany

In the field of spin-orbitronics, the orbital physics of electrons plays a central role, and the orbital magnetization represents a key concept for its controlled detection and manipulation. While the orbital magnetism of collinear ferromagnets is relatively well understood, much less is known about it for non-collinear structures such as magnetic skyrmions and domain walls. By employing a semiclassical Green’s function formalism, we demonstrate how the orbital magnetization in these extended chiral magnetic systems can be understood as the electronic response to emergent electromagnetic fields [1]. We discovered that in such systems the spin-orbit interaction can be used to a great advantage in that it promotes a complex interplay of real-space and k-space topology leading to enhanced orbital responses in interfacial chiral magnets. Besides discussing possible applications of the emergent orbital magnetism in chiral spin systems we also suggest new perspectives for the field of chiral orbitronics.

[1] F. R. Lux et al., arXiv:1706.06068 (2017)