A possible realization of quantum spin ice, Pr2Zr2O7, was recently shown to feature a low-temperature regime of thermal transport consistent with artificial photons in a U(1) Coulomb spin liquid. In this seminar, the speaker will provide spectroscopic evidence for the corresponding low-energy excitations through ultrahigh-resolution magnetic neutron scattering. The momentum-averaged spectrum can be described as relaxational with a rate Γ´ = 10.(4) µeV.
- Huiyuan Man, Johns Hopkins University, Baltimore, Maryland