Magneto-optical properties of single site-controlled InGaAsN quantum wires grown on prepatterned GaAs substrates

摘要

The properties of single site-controlled InGaAsN quantum wires (QWRs)—both untreated and irradiated with atomic hydrogen—are probed by micro-magnetophotoluminescence spectroscopy. The strong anisotropy of the diamagnetic shift measured for different orientations of the applied magnetic field confirms the one-dimensional nature of the QWR carrier wave function. In addition, the strain reduction associated with N incorporation is found to promote a larger indium intake in the QWR, enabling the realization of site-controlled QWRs emitting at long (≥1.3 μm), technologically relevant wavelengths.