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The Aharonov-Bohm effect in a mesoscopic ring of diluted magnetic alloy

Falko, Vladimir (1992) The Aharonov-Bohm effect in a mesoscopic ring of diluted magnetic alloy. Journal of Physics: Condensed Matter, 4 (15). pp. 3943-3954. ISSN 0953-8984

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Abstract

The spin dynamics of magnetic impurities is shown to play a crucial role in mesoscopic effects. It follows from this analysis that the quantum magnetoconductance oscillations in a mesoscopic ring of a diluted magnetic alloy are gradually suppressed in the paramagnetic regime, whereas a strong magnetic field forbids spin-flip processes and restores the mesoscopic Aharonov-Bohm oscillations with an amplitude limited by the efficiency of electron escape to the bulk. This effect is examined analytically using a model of a quasi one-dimensional ring joined to the electrodes by tunnelling contacts or short leads.

Item Type: Article
Journal or Publication Title: Journal of Physics: Condensed Matter
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 57099
Deposited By: ep_importer_pure
Deposited On: 05 Sep 2012 17:59
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 11:31
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/57099

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