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- W2051244644 abstract "In a recent calculation, we obtained exciton and biexciton binding energies and wave functions for a rectangular quantum wire in order to determine its third-order nonlinear optical susceptibility ${mathrm{ensuremath{chi}}}^{(3)}$. Using a variational calculation involving two parameters---exciton radius and exciton-exciton separation within the biexciton---we computed the binding energies of the exciton and biexciton. In the present paper, we have included a third parameter to allow for the variation of exciton radius within the biexciton. As the result of this added variational freedom, the biexciton binding energies changed by 7--10 % and the magnitudes of all variational parameters and of ${mathrm{ensuremath{chi}}}^{(3)}$ changed by approximately 20% for wire dimensions between 25ifmmodetimeselsetexttimesfi{}25 and 300ifmmodetimeselsetexttimesfi{}300 AA{} $^{2}$." @default.
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- W2051244644 date "1995-02-15" @default.
- W2051244644 modified "2023-09-25" @default.
- W2051244644 title "Excitonic nonlinear optical processes in GaAs quantum-well wires" @default.
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- W2051244644 doi "https://doi.org/10.1103/physrevb.51.4633" @default.
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