1,300 research outputs found
Quantum wells with atomically smooth interfaces
By a cleaved-edge overgrowth method with molecular beam epitaxy and a (110)
growth-interrupt-anneal, we have fabricated a GaAs quantum well exactly 30
monolayers thick bounded by atomically smooth AlGaAs hetero-interfaces without
atomic roughness. Micro-photoluminescence imaging of this quantum well indeed
shows spatially uniform and spectrally sharp emission over areas of several
tens of m in extent. By adding a fractional GaAs monolayer to our quantum
well we are able to study the details of the atomic step-edge kinetics
responsible for flat interface formation.Comment: 4 pages, 3 figures, revTex
One Side By Himself: the Life and Times of Lewis Barney, 1808-1894
Review of: One Side by Himself: The Life and Times of Lewis Barney, 1808-1894. Barney, Ronald O
- …