Dispersive spin excitations in highly overdoped cuprates revealed by resonant inelastic x-ray scattering

M. Le Tacon, M. Minola, D. C. Peets +11

Using resonant inelastic x-ray scattering (RIXS) at the Cu $L$-absorption edge, we have observed intense, dispersive spin excitations in highly overdoped Tl${}_2$Ba${}_2$CuO${}_{6+\delta }$ (s…