Role of Interactions in the Far-Infrared Spectrum of a Lateral Quantum-Dot Molecule
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© 2003 American Physical Society (APS). This is the accepted version of the following article: Marlo, M. & Harju, A. & Nieminen, Risto M. 2003. Role of Interactions in the Far-Infrared Spectrum of a Lateral Quantum-Dot Molecule. Physical Review Letters. Volume 91, Issue 18. 187401/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.91.187401, which has been published in final form at http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.91.187401.
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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2003
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Mcode
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Language
en
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187401/1-4
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Physical Review Letters, Volume 91, Issue 18
Abstract
We study the effects of electron-electron correlations and confinement potential on the far-infrared spectrum of a lateral two-electron quantum-dot molecule by exact diagonalization. The calculated spectra directly reflect the lowered symmetry of the external confinement potential. Surprisingly, we find interactions to drive the spectrum towards that of a high-symmetry parabolic quantum-dot. We conclude that far-infrared spectroscopy is suitable for probing effective confinement of the electrons in a quantum-dot system, even if interaction effects cannot be resolved in a direct fashion.Description
Keywords
far-infrared spectrum, exact diagonalization, quantum dots
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Citation
Marlo, M. & Harju, A. & Nieminen, Risto M. 2003. Role of Interactions in the Far-Infrared Spectrum of a Lateral Quantum-Dot Molecule. Physical Review Letters. Volume 91, Issue 18. 187401/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.91.187401.