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Aharonov-Bohm oscillations in a mesoscopic ring with a quantum dot

Published inPhysical review. B, Condensed matter and materials physics, vol. 52, no. 20, p. 14360-14363
Publication date1995
Abstract

We present an analysis of the Aharonov-Bohm oscillations for a mesoscopic ring with a quantum dot inserted in one of its arms. It is shown that microreversibility demands that the phase of the Aharonov-Bohm oscillations changes {\it abruptly} when a resonant level crosses the Fermi energy. We use the Friedel sum rule to discuss the conservation of the parity of the oscillations at different conductance peaks. Our predictions are illustrated with the help of a simple one channel model that permits the variation of the potential landscape along the ring.

Keywords
  • Condensed matter
Citation (ISO format)
LEVY YEYATI, Alfredo, BUTTIKER, Markus. Aharonov-Bohm oscillations in a mesoscopic ring with a quantum dot. In: Physical review. B, Condensed matter and materials physics, 1995, vol. 52, n° 20, p. 14360–14363. doi: 10.1103/PhysRevB.52.R14360
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ISSN of the journal1098-0121
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