Details
| Original language | English |
|---|---|
| Pages (from-to) | 1255-1264 |
| Number of pages | 10 |
| Journal | Superlattices and microstructures |
| Volume | 23 |
| Issue number | 6 |
| Publication status | Published - Jun 1998 |
| Externally published | Yes |
Abstract
Transport spectroscopy reveals the microscopic features of few-electron quantum dots which justify the name artificial atoms. New physics evolve when two quantum dots are coupled by a tunneling barrier. We study, both theoretically and experimentally, the tunneling spectroscopy on a double quantum dot. A detailed lineshape analysis of the conductance resonances proves that off-resonant coherent interdot tunneling governs transport through this system, while tunneling into the double quantum dot occurs resonantly. This coherent interdot tunneling witnesses the evolution of a delocalized electronic state which can be compared to a valence electron of this artificial molecule.
Keywords
- Heterostructure, Quantum dots, Tunneling
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Superlattices and microstructures, Vol. 23, No. 6, 06.1998, p. 1255-1264.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Coupled quantum dots
T2 - Manifestation of an artificial molecule
AU - Pfannkuche, D.
AU - Blick, R. H.
AU - Haug, R. J.
AU - Von Klitzing, K.
AU - Eberl, K.
N1 - Funding information:—One of us (D.P.) gratefully acknowledges financial support from the Deutsche Forschungs-gemeinschaft and the hospitality of the Department of Physics, Indiana University at Bloomington.
PY - 1998/6
Y1 - 1998/6
N2 - Transport spectroscopy reveals the microscopic features of few-electron quantum dots which justify the name artificial atoms. New physics evolve when two quantum dots are coupled by a tunneling barrier. We study, both theoretically and experimentally, the tunneling spectroscopy on a double quantum dot. A detailed lineshape analysis of the conductance resonances proves that off-resonant coherent interdot tunneling governs transport through this system, while tunneling into the double quantum dot occurs resonantly. This coherent interdot tunneling witnesses the evolution of a delocalized electronic state which can be compared to a valence electron of this artificial molecule.
AB - Transport spectroscopy reveals the microscopic features of few-electron quantum dots which justify the name artificial atoms. New physics evolve when two quantum dots are coupled by a tunneling barrier. We study, both theoretically and experimentally, the tunneling spectroscopy on a double quantum dot. A detailed lineshape analysis of the conductance resonances proves that off-resonant coherent interdot tunneling governs transport through this system, while tunneling into the double quantum dot occurs resonantly. This coherent interdot tunneling witnesses the evolution of a delocalized electronic state which can be compared to a valence electron of this artificial molecule.
KW - Heterostructure
KW - Quantum dots
KW - Tunneling
UR - http://www.scopus.com/inward/record.url?scp=0031675763&partnerID=8YFLogxK
U2 - 10.1006/spmi.1996.0143
DO - 10.1006/spmi.1996.0143
M3 - Article
AN - SCOPUS:0031675763
VL - 23
SP - 1255
EP - 1264
JO - Superlattices and microstructures
JF - Superlattices and microstructures
SN - 0749-6036
IS - 6
ER -