Details
| Original language | English |
|---|---|
| Article number | 046802 |
| Journal | Physical review letters |
| Volume | 105 |
| Issue number | 4 |
| Publication status | Published - 20 Jul 2010 |
Abstract
The electronic states of lateral many-electron quantum dots in high magnetic fields are analyzed in terms of energy and spin. In a regime with two Landau levels in the dot, several Coulomb-blockade peaks are measured. A zigzag pattern is found as it is known from the Fock-Darwin spectrum. However, only data from Landau level 0 show the typical spin-induced bimodality, whereas features from Landau level 1 cannot be explained with the Fock-Darwin picture. Instead, by including the interaction effects within spin-density-functional theory a good agreement between experiment and theory is obtained. The absence of bimodality on Landau level 1 is found to be due to strong spin polarization.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Physical review letters, Vol. 105, No. 4, 046802, 20.07.2010.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Interaction-induced spin polarization in quantum dots
AU - Rogge, M. C.
AU - Räsänen, E.
AU - Haug, R. J.
PY - 2010/7/20
Y1 - 2010/7/20
N2 - The electronic states of lateral many-electron quantum dots in high magnetic fields are analyzed in terms of energy and spin. In a regime with two Landau levels in the dot, several Coulomb-blockade peaks are measured. A zigzag pattern is found as it is known from the Fock-Darwin spectrum. However, only data from Landau level 0 show the typical spin-induced bimodality, whereas features from Landau level 1 cannot be explained with the Fock-Darwin picture. Instead, by including the interaction effects within spin-density-functional theory a good agreement between experiment and theory is obtained. The absence of bimodality on Landau level 1 is found to be due to strong spin polarization.
AB - The electronic states of lateral many-electron quantum dots in high magnetic fields are analyzed in terms of energy and spin. In a regime with two Landau levels in the dot, several Coulomb-blockade peaks are measured. A zigzag pattern is found as it is known from the Fock-Darwin spectrum. However, only data from Landau level 0 show the typical spin-induced bimodality, whereas features from Landau level 1 cannot be explained with the Fock-Darwin picture. Instead, by including the interaction effects within spin-density-functional theory a good agreement between experiment and theory is obtained. The absence of bimodality on Landau level 1 is found to be due to strong spin polarization.
UR - http://www.scopus.com/inward/record.url?scp=77954926659&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.105.046802
DO - 10.1103/PhysRevLett.105.046802
M3 - Article
AN - SCOPUS:77954926659
VL - 105
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 4
M1 - 046802
ER -