Properties of the interface in the confined Ising magnet with competing surface fields

A two-dimensional magnetic Ising system confined in an L×D geometry (L⪡D) in the presence of competing magnetic fields (h) acting at opposite walls along the D-direction, exhibits an interface between domains of different orientation that run parallel to the walls. In the limit L→∞, this interface undergoes a wetting transition that occurs at the critical curve Tw(h), so that for T