Zn and Ni doping effects on the low-energy spin excitations in La${}_{1.85}$Sr${}_{0.15}$CuO${}_4$

M. Kofu, H. Kimura, K. Hirota

Impurity effects of Zn and Ni on the low-energy spin excitations were systematically studied in optimally doped La1.85Sr0.15Cu1-yAyO4 (A=Zn, Ni) by neutron scattering. Impurity-fre…