RESONANCE PATTERNS OF AN ANTIDOT CLUSTER - FROM CLASSICAL TO QUANTUM BALLISTICS

We explain the experimentally observed Aharonov-Bohm (AB) resonance pa tterns of an antidot cluster by means of quantum and classical simulat ions and Feynman path integral theory. We demonstrate that the observe d behavior of the AB period signals the crossover from a low B regime which can be understood in terms of electrons following classical orbi ts to an inherently quantum high B regime where this classical picture and semiclassical theories based on it do not apply.