Furtmayr, F.; Teubert, J.; Becker, P.; Conesa-Boj, S.; Morante, J.R.; Chernikov, A.; Schäfer, S.; Chatterjee, S.; Arbiol, J.; Eickhoff, M. "Carrier confinement in GaN/AlxGa1−xN nanowire heterostructures (0 < x ≤ 1)" Physical Review B - Condensed Matter and Materials Physics 84, 20, pp. - 2011 DOI: 10.1103/PhysRevB.84.205303