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Intersubband excitations in ultrathin core-shell nanowires in the one-dimensional quantum limit probed by resonant inelastic light scattering

Meier, Sebastian ; Junior, Paulo E. Faria ; Haas, Ferdinand ; Heller, Emma-Sophia ; Dirnberger, Florian ; Zeller, Viola ; Korn, Tobias ; Fabian, Jaroslav ; Bougeard, Dominique ; Schüller, Christian



Abstract

We investigate single, ultrathin, pure-wurtzite-phase GaAs-AlGaAs core-shell nanowires by resonant inelastic light scattering (RILS). We observe electronic Raman excitations, which can be attributed to intersubband excitations of photoexcited electrons or holes within the quasi-one-dimensional (1D) subband structure. Our analysis reveals that the electronic systems in the narrowest investigated ...

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