Conductance fluctuations in systems with random-magnetic-field scattering.
نویسنده
چکیده
The perturbation-theory study of universal conductance fluctuations is generalized to systems with electron scattering in a static random magnetic field. Our calculation confirms the intuitive expectation that the amplitude of Quctuations coincides with the universal value typical for the unitary random-scattering ensemble. An application of this result to micrometer-size wires with the two-dlmensional electron liquid near 611ing factor v = 1/2q allows us to predict aperiodic Coulomb-type oscillations in this system beyond the Coulomb-blockade regime, which would manifest a correspondence between the Aharonov-Bohm and Aharonov-Casher efFects specific to composite fermions.
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ورودعنوان ژورنال:
- Physical review. B, Condensed matter
دوره 50 23 شماره
صفحات -
تاریخ انتشار 1994