Quantum spin liquids are one of the most intriguing phenomena with emergent gauge structures and fractionalized excitations. Here, we discuss how such emergent gauge fields and fractionalized particles can be controlled in the presence of a lattice strain effect and an external magnetic field. In particular focusing on a U(1) quantum spin liquid, we argue possible frustration in gauge fields and large thermal Hall effect as a signal of such frustration. In addition, considering the proper physical Hilbert space, we derive unique coupling between fractionalized particles in a U(1) spin liquid and discuss discovery of the `hidden phases’ such as a nematic Z2 spin liquid and a supersolid.

Chair: Masaki Oshikawa

This event is jointly organized by the Korea Institute for Advanced Study and the University of Tokyo. “Correlated Electrons Virtual International Seminars (CEVIS)”　https://sites.google.com/view/cevis2020/home