Topological spin textures in chiral magnets such as skyrmions attract great interest as a possible route towards spintronics devices. Central to the suitability for applications are the mechanisms controlling the long-term stability and decay processes. Starting from the mechanisms of stabilization the role of kinetic arrest and supercooling will be addressed. These identify topological...
In this talk I give an overview primarily on chiral magnetic skyrmions – two-dimensionally localized topological magnetization solitons – in B20 magnets, films of B20 magnets, transition-metal films and heterostructures. Taking a multiscale approach from quantum mechanics of electrons, over atomistic spinmodels to micromagnetism, I draw a line of thought from the electronic structure, to the...
The chiral magnet MnSi possesses a non-centrosymmetric chemical unit cell. The non-centrosymmetry has profound consequences for spin-wave dynamics in all ordered magnetic phases of MnSi. Namely, it introduces a Dzyaloshinskii-Moriya term, which causes magnons to be created at different absolute energies than they are annihilated. This asymmetry ("non-reciprocity") in the dispersion is limited...
Thermal management is a key aspect for future information technologies since non-volatile data storage and information processing in quantum circuits strongly rely on minimizing thermal decoherence effects. Among the successful strategies to control the coherence are rapid cooling and thermal isolation of quantum states, emphasizing the importance to engineer materials with very high or very...
Both superconducting vortex and skyrmion lattices in chiral magnets can be regarded as macroscopic lattices, formed by topological entities. Analogous to condensed matter, a large variety of phases is also observed for vortex and skyrmion matter, resembling their particle like character and reflecting the underlying physical properties. Moreover, both vortex and skyrmion matter represent ideal...
