Role of surface anisotropy for magnetic impurities in electron dephasing   and energy relaxation and their size effect
  Recently the electron dephasing and energy relaxation due to different magnetic impurities have been extensively investigated experimentally in thin wires and in this Letter these quantities are theoretically studied. It was shown earlier that a magnetic impurity in a metallic host with strong spin-orbit interaction experiences a surface anisotropy of the form $H=K_d ({\bf n}{\bf S})^2$ which causes size effects for impurities with integer spin. Here we show that the dephasing and the energy relaxation are influenced by the surface anisotropy in very different ways for integer spin having a singlet ground state. That must result also in strong size effects and may resolve the puzzle between the concentrations estimated from the two kind of experiments. 
O. Ujsaghy (Budapest Univ. of Technology and Economics, Hungary), A.   Jakovac (Budapest Univ. of Technology and Economics, ...