Topological aspects of non-centrosymmetric magnets

The concept of chirality has been influencing many branches of physics for centuries. On the other hand, study of topology and related concepts have recently been introduced to the physics community. Exotic quasiparticles, such as magnetic skyrmions emerge when these two elegant topics merge with each other. Among the many skyrmion hosts, Cu2OSeO3 is one of the very few insulators to host a skyrmion lattice to date. Being finite size objects, the ease of formation, stabilization as well as manipulation of skyrmions strongly depend on the boundary conditions imposed by the crystal geometry. Thus leading to the so-called Geometrical Confinement Effects. In the first part of the thesis, this effect is explored in fine details, starting with synthesis of Cu2OSeO3 particles in their relevant length scales. As a function of their size, the emergent behaviour in this system of particles, is explored with help of a number of sophisticated tools. Moreover, our experimental results are well-verified using micromagnetic simulations. We find distinct yet correlated signatures combining three of the most used frequency domains in physics. Our results will serve as the guiding principle for exploration of geometrical confinement effects in insulator-based application paradigms. The latter chapter deals with a higher dimensional multi-spin object, the so-called Hedgehog lattice. Discovery of a Hedgehog lattice in a novel inorganic crystal is reported in this chapter. We have combined solid-state synthesis with various bulk property measurement probes to properly characterize this system. True magnetic configuration has been determined through many experiments performed at large scale facilities. Our results will not only spark research interest among experimentalists, but also theorists working on emergent properties of topological materials.