1204.1142 (Tal Havdala et al.)

Ulta-slow relaxation in discontinuous-film based electron glasses    [PDF]

Tal Havdala, Ariel Eizenbach, Aviad Frydman

We present field effect measurements on discontinuous 2D thin films which are composed of a sub monolayer of nano-grains of Au, Ni, Ag or Al. Like other electron glasses these systems exhibit slow conductance relaxation and memory effects. However, unlike other systems, the discontinuous films exhibit a dramatic slowing down of the dynamics below a characteristic temperature $T^*$. $T^*$ is typically between 10-50K and is sample dependent. For $TView original: http://arxiv.org/abs/1204.1142