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Coupled Quantum Dots Fabricated by Cleaved Edge Overgrowth: From Artificial Atoms to Molecules

Schedelbeck, Gert ; Wegscheider, Werner ; Bichler, Max ; Abstreiter, Gerhard
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Date of publication of this fulltext: 02 Nov 2009 13:36


Abstract

Atomically precise quantum dots of mesoscopic size have been fabricated in the gallium arsenide-aluminum gallium arsenide material system by cleaved edge overgrowth, with a high degree of control over shape, composition, and position. The formation of bonding and antibonding states between two such "artificial atoms" was studied as a function of quantum dot separation by microscopic ...

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