  Non-equilibrium dynamics in a Ag(11%Mn) spin-glass has been studied by low
frequency ac-susceptibility and magnetic relaxation experiments. The results
unequivocally show that spin structures that memorize the cooling process are
imprinted in the system. These imprinted structures disclose themselves through
dramatic changes of the dynamics on re-heating the spin-glass through the
temperatures where intermittent stops or changes of the cooling rate have been
imposed. We can qualitatively interpret our results in terms of the droplet
spin-glass model developed by Fisher and Huse [Phys. Rev. B 38 (1988) 373;
386].
