Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1999-04-23
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
8 RevTex pages, 3 PostScript figures, submitted to Phys. Rev. B
Scientific paper
10.1103/PhysRevB.61.1700
We present a detailed investigation of excitonic absorption in $Zn_{0.69}Cd_{0.31}Se/ZnSe$ quantum wells under the application of a perpendicular magnetic field. The large energy separation between heavy- and light-hole excitons allows us to clearly resolve and identify magneto-excitonic absorption resonant with the continuum edge of the 1S heavy-hole exciton. Experimental values of the exciton binding energy are compared with results of a theoretical model that includes the exciton-phonon interaction. The remarkable agreemeent found unambiguously indicates the predominant polaronic character of excitons in ZnSe-based heterostructures.
Bajaj K. K.
Beltram Fabio
Colombelli Raffaele
Krivorotov Ilya
Nardis Andrea de
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