Rashba-control for the spin excitation of a fully spin polarized vertical quantum dot

Details Rashba-control for the spin excitation of a fully spin polarized vertical quantum dot Rashba-control for the spin excitation of a fully spin polarized vertical quantum dot

2005-01-03

arxiv.org/abs/cond-mat/0501021v1

Phys.Rev. B. Rapid Comm. 71 121301 (R) (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures

Scientific paper

10.1103/PhysRevB.71.121310

Far infrared radiation absorption of a quantum dot with few electrons in an orthogonal magnetic field could monitor the crossover to the fully spin polarized state. A Rashba spin-orbit coupling can tune the energy and the spin density of the first excited state which has a spin texture carrying one extra unit of angular momentum. The spin orbit coupling can squeeze a flipped spin density at the center of the dot and can increase the gap in the spectrum.

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