Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume 34, Issue 1-2, Pages 128-131Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physe.2006.03.001
Keywords
magnetoresistance oscillations; bilayers; interlayer tunneling; Aharonov-Bohm effect; composite fermions
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Angular magnetoresistance oscillations (AMRO) were originally discovered in organic conductors and then found in many other layered metals. It should be possible to observe AMRO to semiconducting bilayers as well. Here we present an intuitive geometrical interpretation of AMRO as the Aharonov-Bohm interference effect, both in real and momentum spaces, for balanced and imbalanced bilayers. Applications to the experiments with bilayers in tilted magnetic fields in the metallic state are discussed. We speculate that AMRO may be also observed when each layer of the bilayer is in the composite-fermion state. (c) 2006 Elsevier B.V. All rights reserved.
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