Formation of localized magnetic moments in zinc-doped lanthanum-strontium superconductors
Kataev V. E. , Kukovitskii E. F. , Teitel'baum G. B. , Finkel'shtein A. M.
ESR studies of La1<82 Sr018 (Ci^ _ xZnx )04 show that replacement of the copper ions by nonmagnetic zinc ions leads to the form ation of complexes with localized magnetic moments. At zinc concentrations of ~ 1 at. % the number of magnetic moments is close to the number of replaced ions. This result is important for verification of microscopic models of high-temperature superconductors.