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Probing the spin states of three interacting electrons in quantum dots
- Source :
- Phys. Rev. B 85, 033307 (2012)
- Publication Year :
- 2011
-
Abstract
- We observe a low-lying sharp spin mode of three interacting electrons in an array of nanofabricated AlGaAs/GaAs quantum dots by means of resonant inelastic light scattering. The finding is enabled by a suppression of the inhomogeneous contribution to the excitation spectra obtained by reducing the number of optically-probed quantum dots. Supported by configuration-interaction calculations we argue that the observed spin mode offers a direct probe of Stoner ferromagnetism in the simplest case of three interacting spin one-half fermions.
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 85, 033307 (2012)
- Publication Type :
- Report
- Accession number :
- edsarx.1109.4758
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.85.033307