Magnetization-driven Lifshitz transition and charge-spin coupling in the kagome metal YMn6Sn6

Abstract

Changes to the Fermi surface, and hence electronic structure of a system, are typically accompanied with changes to the underlying symmetry; however, independent changes to Fermi topology can also occur in what is termed a Lifshitz transition. Here, using magnetotransport measurements the authors provide evidence of a rare magnetization driven Lifshitz transition as well as a separate strong charge-spin coupling in the Kagome metal YMn6Sn6.