Two-dimensional model

The hexagonal antisphere systems in *Zhukov* *et al.* (2003) can be mapped
to

two-dimensional samples by considering hexagonally-spaced circular
holes -- flat antidots -- in a thin film. By varying the ratio of
hole radius to spacing radius the surface of the antisphere
geometry at different heights can be modelled reasonably accurately.
Since larger systems can be simulated, the influence of the sample
edges detailed in section 6.3 is substantially
reduced (figure 6.6).

Richard Boardman 2006-11-28