Spin Structure and Dynamical Magnetic Response of Spin-Orbital Polarons in Lightly Doped Cobaltates

We present numerical results on a spin-orbital polaron for lightly doped cobaltates with x≲ 0.7 < 1. We compare magnetic susceptibility of the polaron with realistic parameters to experiment and find perfect agreement. Further, we analyze magnetic excitations and argue that they are responsible for observed spin-wave scattering.