Reverse Roughening Transition in Carbon Dioxide

Valentina M. Giordano (1) , Frederic Datchi (1)

1 IMPMC - Institut de minéralogie et de physique des milieux condensés

We report the observation of a roughening transition in carbon dioxide along the melting line of phase I, which we call reverse as faceting appears with increasing temperature. The characteristics of the transition are discussed in light of modern theories of roughening and the causes of its reverse behavior investigated. We propose that high temperature faceting is related to a pressure-induced increase of the surface stiffness.

Domaines: Autre [cond-mat.other]

Valentina M. Giordano, Frederic Datchi. Reverse Roughening Transition in Carbon Dioxide. Physical Review Letters, 2007, 99, pp.165701. ⟨10.1103/PhysRevLett.99.165701⟩. ⟨hal-00195301⟩