Fabrication of GaAs arrowhead-shaped quantum wires by metalorganic chemical vapor deposition selective growth

Abstract
We fabricated GaAs arrowhead‐shaped quantum wires utilizing both the selective growth technique and the difference in the stabilized crystal facet between GaAs and Al0.4Ga0.6As; the stabilized facet of the GaAs layer is (111)A and that of the Al0.4Ga0.6As layer is (311)A. A systematic change in the size of the quantum wire exhibits blue shifts of the photoluminescence peak, which is due to enhancement of the two‐dimensional quantum confinement effect.