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Article Dans Une Revue Annalen der Physik Année : 2010

Ageing in granular aluminium insulating thin films

Julien Delahaye
Thierry Grenet

Résumé

We present a new set of electrical field effect measurements on granular aluminium insulating thin films. We have explored how the conductance relaxations induced by gate voltage changes depend on the age of the system, namely the time elapsed since its quench at low temperature. A clear age dependence of the relaxations is seen, qualitatively similar to ageing effects seen in other well studied glassy systems such as spin glasses or polymers. We explain how our results differ from the previous ones obtained with different protocols in indium oxide and granular aluminium thin films. Our experimental findings bring new information on the dynamics of the system and put new constraints on the theoretical models that may explain slow conductance relaxations in disordered insulators.
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Dates et versions

hal-00711068 , version 1 (05-07-2012)

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Julien Delahaye, Thierry Grenet. Ageing in granular aluminium insulating thin films. Annalen der Physik, 2010, 18 (12), pp.830-835. ⟨10.1002/andp.200910379⟩. ⟨hal-00711068⟩

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