Growth and Magnetotransport of Kagome RMn6Sn6 Crystals

In this seminar, I will discuss the growth and characterization of the magnetic and electronic phase diagrams of two members of the magnetic kagome family RMn6Sn6 (R = Rare-Earth). In ErMn6Sn6, we will see that fluctuations in the size of the Er moment lead to the existence of a topological Hall effect (THE) in a narrow temperature and field range. In a high-entropy form of RMn6Sn6 (HEMn6Sn6), we will also discuss the dependence of the magnetic states on the choice of Rare-Earths and how the competition of the ground states of the single rare-earth forms leads to a rich magnetic phase diagram. We will also discuss the emergent behavior of the longitudinal magnetoresistance and how it correlates with these magnetic states.