Topological Hunds rules and the electronic properties of a triple lateral quantum dot molecule

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.75.115301
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TypeArticle
Journal titlePhysical review. B, Condensed matter and materials physics
Volume75
Issue11
Pages115301115311; # of pages: 11
AbstractWe analyze theoretically and experimentally the electronic structure and charging diagram of three coupled lateral quantum dots filled with electrons. Using the Hubbard model and real-space exact diagonalization techniques we show that the electronic properties of this artificial molecule can be understood using a set of topological Hunds rules. These rules relate the multielectron energy levels to spin and the interdot tunneling t, and control charging energies. We map out the charging diagram for up to N=6 electrons and predict a spin-polarized phase for two holes. The theoretical charging diagram is compared with the measured charging diagram of the gated triple-dot device.
Publication date
AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedNo
NPARC number12744568
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Record identifiera88cf448-a07b-4f4b-ac15-257a32b303f3
Record created2009-10-27
Record modified2016-05-09
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