How (Super) Rough is the Glassy Phase of a Crystalline Surface with a Disordered Substrate?
Enzo Marinari, Remi Monasson, Juan J. Ruiz-Lorenzo
Abstract
We discuss the behavior of a crystalline surface with a disordered substrate. We focus on the possible existence of a super-rough glassy phase, with height-height correlation functions which vary as the square logarithm of the distance. With numerical simulations we establish the presence of such a behavior, that does not seem to be connected to finite size effects. We comment on the variational approach, and suggest that a more general extension of the method could be needed to explain fully the behavior of the model.
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