Weak Localization in Chaotic versus Nonchaotic Cavities: A Striking Difference in the Line Shape
Open Access
- 10 October 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 73 (15), 2111-2114
- https://doi.org/10.1103/physrevlett.73.2111
Abstract
We report experimental evidence that chaotic and nonchaotic scattering through ballistic cavities display distinct signatures in quantum transport. In the case of nonchaotic 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.Keywords
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