Lifetimes of Magnetic Excitations

T. Keller, B. Keimer

Short Summary

Project project{F3} uses coherent manipulation of the neutron spin in Larmor precession devices to develop a detailed, quantitative understanding of the dispersion and decay channels of magnons in correlated-electron materials. Focus areas are dynamical scaling near quantum phase transitions, collective modes in high-temperature superconductors, and the dynamics of soft longitudinal (``Higgs') modes in ruthenium oxides.