Physics – Condensed Matter
Scientific paper
2000-07-10
Physics
Condensed Matter
6 pages, 7 figures, submitted to Phys. Rev. E
Scientific paper
10.1103/PhysRevE.63.021704
A Landau model is used to study the phase behavior of the surface layer for magnetic and cholesteric liquid crystal systems that are at or near a Lifshitz point marking the boundary between modulated and homogeneous bulk phases. The model incorporates surface and bulk fields and includes a term in the free energy proportional to the square of the second derivative of the order parameter in addition to the usual term involving the square of the first derivative. In the limit of vanishing bulk field, three distinct types of surface ordering are possible: a wetting layer, a non-wet layer having a small deviation from bulk order, and a different non-wet layer with a large deviation from bulk order which decays non-monotonically as distance from the wall increases. In particular the large deviation non-wet layer is a feature of systems at the Lifshitz point and also those having only homogeneous bulk phases.
Allender D. W.
Jacobs A. E.
Mukamel David
No associations
LandOfFree
Surface states in nearly modulated systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Surface states in nearly modulated systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface states in nearly modulated systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-376785