In:
Science, American Association for the Advancement of Science (AAAS), Vol. 278, No. 5344 ( 1997-12-05), p. 1792-1795
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 photoluminescence (PL) spectroscopy. The coupling strength within these “artificial molecules” is characterized by a systematic dependence of the separation of the bonding and antibonding levels, and of the PL linewidth, on the “interatomic” distance. This model system opens new insights into the physics of coupled quantum objects.
Type of Medium:
Online Resource
ISSN:
0036-8075
,
1095-9203
DOI:
10.1126/science.278.5344.1792
Language:
English
Publisher:
American Association for the Advancement of Science (AAAS)
Publication Date:
1997
detail.hit.zdb_id:
128410-1
detail.hit.zdb_id:
2066996-3
detail.hit.zdb_id:
2060783-0
SSG:
11
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