Topologically Protected Structures

Our research in this field aims to unravel the physics of topologically protected structures arising in correlated matter like skyrmions and ferroelectric domain-wall vortex cores, both promising new functionalities of correlated matter that could pave the way for future advances in microelectronics


Néel-type skyrmion

Skyrmions, whirl-like spin objects, in recent years have attracted tremendous interest from both an academic and technological point of view. We search for new types of skyrmion-lattice states that are stable in a large parameter space. Moreover, we explore multiferroic skyrmion systems that may enable the dissipation-free electronic control of these nanometer-sized objects, which is crucial for skyrmion-based memory devices


Schematic sample cross section in a hexagonal manganite indicating different regions, including ferroelectric vortex cores.


We also investigate vortex-like ferroelectric domain patterns, where the vortex cores represent stable topological defects, as occurring in hexagonal manganites. These stable topological objects may be of high relevance for the design of new domain-wall-based microelectronic devices.

Some relevant publications from our group: