When vortices meet skyrmions
28 January 2020
Campus Groenenborger, Building U, Room 244 - Groeneborgerlaan 171 - 2020 Antwerpen (route: UAntwerpen, Campus Groenenborger
Organization / co-organization:
Condensed Matter Theory
Condensed Matter Theory lecture presented by Prof. Clecio C. de Souza Silva, UFPE, Brazil
Superconducting vortices are tiny whirlpools of supercurrent, each carrying one quantum of magnetic flux. Vortices are found in virtually all practical superconducting materials and, because of the way they respond to electric currents and magnetic fields, they dominate the phenomenology and most applications of superconductors. Magnetic skyrmions, on the other hand, are topologically protected spin textures, which can be stabilized in chiral ferromagnets.
Because of their small size and their sensibility to spin-polarized currents, skyrmions are considered promising systems for future spintronic applications. In a way similar, but not identical to vortices, skyrmions repel each other and tend to form a triangular lattice. Since both, skyrmions and vortices, are magnetic in nature, they are expected to interact with each other in, for instance, a heterostructure comprising a superconducting and a chiral magnetic layer. In this talk, we will discuss how the interaction between vortices and skyrmions in such hybrid system can lead to surprising physical phenomena not observed in the separated systems.