Interaction of tunnel-coupled quantum dots in a magnetic field - art. no. 045311

Authors
Duncan, DS Topinka, MA Westervelt, RM Maranowski, KD Gossard, AC
Citation
Ds. Duncan et al., Interaction of tunnel-coupled quantum dots in a magnetic field - art. no. 045311, PHYS REV B, 6304(4), 2001, pp. 5311
Citations number
21
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
6304
Issue
4
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010115)6304:4<5311:IOTQDI>2.0.ZU;2-G
Abstract
An artificial molecule formed by two tunnel-coupled quantum dots in a GaAs/ AlxGa1-xAs heterostructure is studied in perpendicular magnetic fields. Cou lomb blockade spectroscopy at low temperatures determines how the binding e nergy of the artificial molecule evolves with magnetic field. The binding e nergy and the double-dot ground-state energy exhibit mesoscopic fluctuation s due to the coupling of electron wave functions on the individual dots.