title: Spatial fluctuations of optical emission from single ZnO/MgZnO nanowire quantum wells.
abstract: MgZnO/ZnO quantum wells on top of ZnO nanowires were grown by pulsed laser deposition. Ensembles of spatially fluctuating and narrow cathodoluminescence peaks with single widths down to 1 meV were found at the spectral position of the quantum well emission at 4 K. In addition, the number of these narrow QW peaks increases with increasing excitation power in micro-photoluminescence, thus pointing to quantum-dot-like emission centers. Indeed, laterally strained areas of about 5 nm diameter were identified at the quantum well positions on top of the nanowires by high-resolution transmission electron microscopy.
authors: Institut für Experimentelle Physik II, Universität Leipzig, Linnéstraße 5, D-04103 Leipzig, Germany.
authors: C
authors: C
authors: Czekalla
authors: J
authors: J
authors: Guinard
authors: C
authors: C
authors: Hanisch
authors: B Q
authors: BQ
authors: Cao
authors: E M
authors: EM
authors: Kaidashev
authors: N
authors: N
authors: Boukos
authors: A
authors: A
authors: Travlos
authors: J
authors: J
authors: Renard
authors: B
authors: B
authors: Gayral
authors: D
authors: D
authors: Le Si Dang
authors: M
authors: M
authors: Lorenz
authors: M
authors: M
authors: Grundmann