| Issue |
EPL
Volume 99, Number 1, July 2012
|
|
|---|---|---|
| Article Number | 17009 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/99/17009 | |
| Published online | 12 July 2012 | |
Spin-orbit interaction induced singlet-triplet resonant Raman transitions in quantum dot helium
1
Department of Solid State Physics, Yerevan State University - Yerevan, Armenia
2
Department of Physics and Astronomy, University of Manitoba - Winnipeg, Canada R3T 2N2
(a) tapash@physics.umanitoba.ca
Received: 28 April 2012
Accepted: 18 June 2012
From our theoretical studies of resonant Raman transitions in two-electron quantum dots (artificial helium atoms) we show that in this system, the singlet-triplet Raman transitions are allowed (in polarized configuration) only in the presence of spin-orbit interactions. With an increase of the applied magnetic field this transition dominates over the singlet-singlet and triplet-triplet transitions. This intriguing effect can therefore be utilized to tune Raman transitions as well as the spin-orbit coupling in few-electron quantum dots.
PACS: 73.21.La – Quantum dots / 71.70.Ej – Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect / 78.30.Fs – III-V and II-VI semiconductors
© EPLA, 2012
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