title: Optical, structural, and numerical investigations of GaAs/AlGaAs core-multishell nanowire quantum well tubes.
abstract: The electronic properties of thin, nanometer scale GaAs quantum well tubes embedded inside the AlGaAs shell of a GaAs core-multishell nanowire are investigated using optical spectroscopies. Using numerical simulations to model cylindrically and hexagonally symmetric systems, we correlate these electronic properties with structural characterization by aberration-corrected scanning transmission electron microscopy of nanowire cross sections. These tubular quantum wells exhibit extremely high quantum efficiency and intense emission for extremely low submicrowatt excitation powers in both photoluminescence and photoluminescence excitation measurements. Numerical calculations of the confined eigenstates suggest that the electrons and holes in their ground states are confined to extremely localized one-dimensional filaments at the corners of the hexagonal structure which extend along the length of the nanowire.
authors: Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221-0011, United States.
authors: Melodie
authors: M
authors: Fickenscher
authors: Teng
authors: T
authors: Shi
authors: Howard E
authors: HE
authors: Jackson
authors: Leigh M
authors: LM
authors: Smith
authors: Jan M
authors: JM
authors: Yarrison-Rice
authors: Changlin
authors: C
authors: Zheng
authors: Peter
authors: P
authors: Miller
authors: Joanne
authors: J
authors: Etheridge
authors: Bryan M
authors: BM
authors: Wong
authors: Qiang
authors: Q
authors: Gao
authors: Shriniwas
authors: S
authors: Deshpande
authors: Hark Hoe
authors: HH
authors: Tan
authors: Chennupati
authors: C
authors: Jagadish