@Article{Lahnemann_prb_2011,
  Title                    = {Coexistence of quantum-confined {Stark} effect and localized states in an {(In,Ga)N/GaN} nanowire heterostructure},
  Author                   = {L\"ahnemann, Jonas and Brandt, Oliver and Pf\"uller, Carsten and Flissikowski, Timur and Jahn, Uwe and Luna, Esperanza and Hanke, Michael and Knelangen, Matthias and Trampert, Achim and Grahn, Holger T.},
  Journal                  = {Phys. Rev. B},
  Volume                   = {84},
  Pages                    = {155303},
  Year                     = {2011},
  Abstract                 = {We analyze the emission of single GaN nanowires with (In,Ga)N insertions using both microphotoluminescence and cathodoluminescence spectroscopy. The emission spectra are dominated by a green luminescence band that is strongly blueshifted with increasing excitation density. In conjunction with finite-element simulations of the structure to obtain the piezoelectric polarization, these results demonstrate that our (In,Ga)N/GaN nanowire heterostructures are subject to the quantum-confined Stark effect. Additional sharp peaks in the spectra, which do not shift with excitation density, are attributed to emission from localized states created by compositional fluctuations in the ternary (In,Ga)N alloy.},
  Arxiv                    = {1109.6039},
  Doi                      = {10.1103/PhysRevB.84.155303}
}