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Conductance fluctuations in systems with random-magnetic-field scattering

Research output: Contribution to journalJournal article

Published

Journal publication date15/12/1994
JournalPhysical Review B
Journal number23
Volume50
Number of pages5
Pages17406-17410
Original languageEnglish

Abstract

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 fluctuations coincides with the universal value typical for the unitary random-scattering ensemble. An application of this result to micrometer-size wires with the two-dimensional electron liquid near filling factor ν=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.

Bibliographic note

© 1994 The American Physical Society