Crossover from Collective to Incoherent Spin Excitations in Superconducting Cuprates Probed by Detuned Resonant Inelastic X-ray Scattering

M. Minola, Y. Lu, Y. Y. Peng +22

Spin excitations in the overdoped high temperature superconductors Tl${}_2$Ba${}_2$CuO${}_{6+\delta }$ and (Bi,Pb)${}_2$(Sr,La)${}_2$CuO${}_{6+\delta }$ were investigated by resonant inelastic x-ray sca…