Magnetic excitations and amplitude fluctuations in insulating cuprates

Nitin Chelwani, Andreas Baum, Thomas Böhm +7

We present results from light scattering experiments on three insulating antiferromagnetic cuprates, YBa${}_2$Cu${}_3$O${}_{6.05}$, Bi${}_2$Sr${}_2$YCu${}_2$O${}_{8+\delta }$, and La${}_2$CuO${}_4$ as a f…