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The spin structure of two vertically coupled quantum dots

✍ Scribed by B Partoens; F.M Peeters

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 102 KB
Volume: 6
Category: Article
ISSN: 1386-9477
DOI: 10.1016/s1386-9477(99)00114-9

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✦ Synopsis

The electronic states of a pair of vertically coupled quantum dots are calculated using spin density functional theory, where the tunneling between the dots is included. For small and large interdot distances Hund's rule determines the ground state, while for intermediate distances new phases are predicted. The number of intermediate phases increases with the total number of electrons in the coupled dots. These phases are expected to be observable in the addition energies.

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