Quantum Matter Seminar

Recently Lu Li's group has observed a magnetization plateau at 1/9 in a kagome spin liquid candidate and magnetization oscillations near the plateau. (arXiv: 2310.07989) I will discuss the data and our attempt to interpret them in terms of Fermionic spinons subject to a gauge magnetic field. The basic effect was predicted by Lesik Motrunich in 2006 for spin liquids near the Mott transition. Interestingly the present material is a robust insulator with a large charge gap, making the observation of quantum oscillations even more surprising.