Regensburg 2002 – wissenschaftliches Programm

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HL: Halbleiterphysik

HL 20: Quantenpunkte und -dr
ähte: Optische Eigensch. II

HL 20.1: Vortrag

Dienstag, 12. März 2002, 14:30–14:45, H14

Emission of correlated electron pairs from a quantum dot: An exact two-electron initial state. — •Natasha Fominykh, Oleg Kidun, Arthur Ernst, and Jamal Berakdar — Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle/Saale

We use the two-electron eigenstates of a parabolic potential well to calculate the double photoionization spectra of a quantum dot. Being exactly solvable, the problem of two interacting electrons in the oscillator confinement provides a unique test for different approximate techniques for the treatment of few-body systems. It is shown that the momentum-space two-electron initial state probability density can be mapped onto energy and angular spectra by means of double photoionization.