RKKY interaction of RE magnetic moments in (RE)Ba2Cu3O7 superconductors
Buzdin A. I. , Bulaevskii L N.
The RKKY interaction of the RE moments is used in calculating the change caused in the intensity of the magnetic scattering of neutrons by superconductivity in (RE)Ba2Cu307 compounds. The results explain experimental data on small-angle neutron scattering in ErBa2Cu307. They also reveal the superconducting correlation length at temperatures F< Tc.