Ferromagnets-induced splitting of molecular states of T-shaped double quantum dots

Krzysztof Wójcik ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2015, vol. 88, issue 5, 1-8

Abstract: The exchange field for molecular states of double quantum dot, induced by two ferromagnets coupled to the device in T-shaped configuration, is defined and calculated. It is found, that in the regime of strong coupling between quantum dots, the dependence of the exchange field on this coupling becomes nontrivial. In particular, it changes the sign a few times to eventually vanish in the limit of infinite inter-dot coupling. The excitation energies of double quantum dot are calculated and the results used to predict the conditions for suppression of the two-stage Kondo effect in the considered nanostructure. Copyright The Author(s) 2015

Keywords: Mesoscopic and Nanoscale Systems (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1140/epjb/e2015-50821-3

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