Tootfinder

Spin-charge bound states and emerging fermions in a quantum spin liquid
Jens H. Nyhegn, Kristian Knakkergaard Nielsen, Leon Balents, Georg M. Bruun
https://arxiv.org/abs/2507.02508

Spin-charge bound states and emerging fermions in a quantum spin liquid
The complex interplay between charge and spin dynamics lies at the heart of strongly correlated quantum materials, and it is a fundamental topic in basic research with far reaching technological perspectives. We explore in this paper the dynamics of holes in a single band extended $t-J$ model where the background spins form a $\mathbb{Z}_{2}$ quantum spin liquid (QSL). Using a field theory approach based on a parton construction, we show that while the electrons for most momenta fractionalize i…