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One-dimensional continuum and exciton states in quantum wires

Hidefumi Akiyama·Loren N. Pfeiffer·Masahiro Yoshita·Aron Pinczuk·Ken W. West
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Abstract

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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Hidefumi Akiyama, Loren N. Pfeiffer, Masahiro Yoshita, Aron Pinczuk, Ken W. West. 2002-09-10. One-dimensional continuum and exciton states in quantum wires. https://doi.org/10.1063/1.1539552

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