Magneto-Optics of GaAs Quantum Wire Lattices Grown by Selective-Area MOVPE
NTT CORPORATION KANGAWA (JAPAN) NTT BASIC RESEARCH LAB
Pagination or Media Count:
We report the magneto-optical measurement of GaAs quantum wire lattices of 0.7 micrometer period grown on GaAs111B substrates by using the selective-area MOVPE technique. We measure the photoluminescence PL spectra at 60 mK from the triangular and the Kagome lattice patterns as well as from the unpatterned single quantum well SQW as a reference. While the PL from acceptors is dominant in all the samples, the PL spectra have a different peak between the wire structures and the SQW. When we apply a perpendicular magnetic field to the samples, the PL intensities slightly decrease up to 100 mT and then increase at higher magnetic fields with periodic oscillations in the triangular and the Kagome lattices. This oscillation is possibly attributed to the interference effect of electrons in the lattice patterns threaded by the magnetic flux.
- Industrial Chemistry and Chemical Processing
- Electrical and Electronic Equipment