H/2e Oscillations and Quantum Chaos in Ballistic Aharonov-bohm Billiards Typeset Using Revt E X
نویسندگان
چکیده
We study the quantum-interference eeect for the single ballistic Aharonov-Bohm billiard in the presence of a weak magnetic eld B. The diagonal part of the wave-number averaged reeection coeecient R D is calculated by use of semi-classical scattering theory. In addition to the appearance of "h=2e oscil-lation" which is caused by interference between time-reversed coherent back-scattering classical trajectories, B in the conducting region leads to "negative magneto-resistance" and "damping oscillation amplitude". B dependence of the results reeects the underlying classical (chaotic and regular) dynamics.
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