One-dimensional continuum and exciton states in quantum wires

Details One-dimensional continuum and exciton states in quantum wires One-dimensional continuum and exciton states in quantum wires

2002-09-10

arxiv.org/abs/cond-mat/0209251v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, RevTeX

Scientific paper

10.1063/1.1539552

High-quality T-shaped quantum wires are fabricated by cleaved-edge overgrowth with the molecular beam epitaxy on the interface improved by a growth-interrupt high-temperature anneal. Characterization by micro-photoluminescence (PL) and PL excitation (PLE) spectroscopy at 5 K reveals high uniformity, a sharp spectral width, and a small Stokes shift of one-dimensional (1-D) excitons. The PLE spectrum for 1-D states shows a large peak of ground-state excitons and a small absorption band ascribed to 1-D continuum states with an onset at 11 meV above the exciton peak.

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