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Physica E Low-dimensional Systems and Nanostructures

Quantum oscillations and entanglement in Aharonov–Bohm rings with two magnetic impurities and asymmetric electron injection

Giorgio Cattapan, Paolo Lotti

Published Sep 1, 2012• 2 citations
Publisher
DOI
10.1016/j.physe.2012.08.022

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The Aharonov–Bohm (AB) interference oscillations manifested through transmission of an electron in a mesoscopic device with a double-ring in the presence of a magnetic impurity serving as the spin-flipper are studied. The spin-flipper is demonstrated to indeed cause the partial decoherence of the AB interference. Moreover, it is found that the spin-up/down transmission coefficients are asymmetric in the flux reversal while the reflection coefficients as well as that the total transmission coefficient are symmetric.