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Electron capture times due to the electron-electron (e-e), electron-hole(e-h) and electron-polar optical phonon (e-pop) interactions are calculated inthe GaAs quantum well (QW) with electron and hole densities 10^11 cm^-2. Thecalculated capture times oscillate as a function of the QW width with the sameperiod but with different amplitudes. The e-h capture time is two to fourorders larger and the e-e capture time one to three orders larger than thee-pop capture time. The exceptions are the QW widths near resonance minima,where the e-e capture time is only 2-3 times larger and the e-h capture time10-100 times larger. Different physical origin of the oscillatory behavior isdemonstrated for the e-e and e-pop capture times. Effects of exchange anddegeneracy on the e-e capture are analysed. The exchange effect increases thee-e capture time approximately two times while the degeneracy does not changethe capture time except for the QW depths and widths near the resonance.Comment: 10 pages, LaTeX2.09, 8 PostScript figure

Electron capture in quantum wells via scattering by electrons, holes, and optical phonons