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Weak-Localization in Chaotic Versus Non-Chaotic Cavities: A Striking Difference in the Line Shape

A. M. Chang·H. U. Baranger·L. N. Pfeiffer·K. W. West
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Abstract

We report experimental evidence that chaotic and non-chaotic scattering through ballistic cavities display distinct signatures in quantum transport. In the case of non-chaotic cavities, we observe a linear decrease in the average resistance with magnetic field which contrasts markedly with a Lorentzian behavior for a chaotic cavity. This difference in line-shape of the weak-localization peak is related to the differing distribution of areas enclosed by electron trajectories. In addition, periodic oscillations are observed which are probably associated with the Aharonov-Bohm effect through a periodic orbit within the cavities.

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A. M. Chang, H. U. Baranger, L. N. Pfeiffer, K. W. West. 1994-05-26. Weak-Localization in Chaotic Versus Non-Chaotic Cavities: A Striking Difference in the Line Shape. https://doi.org/10.1103/physrevlett.73.2111

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