Serpentine superlattice quantum-wire arrays of (Al,Ga)As grown on vicinal GaAs substrates
- 8 June 1992
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 68 (23), 3464-3467
- https://doi.org/10.1103/physrevlett.68.3464
Abstract
A serpentine superlattice quantum-wire array avoids the tilt sensitivity of a tilted superlattice and promises significant 1D confinement at the 10 nm scale. Transmission electron micrographs confirm the intended geometry. Three independent polarization measurements, an energy shift, and the light-hole–heavy-hole splitting at 1.4 K, when compared with theory demonstrate 1D valence band states and 2D conduction band states. All five measurements are explained by lateral As wells and barriers of x=0.12 and 0.21, respectively, thus characterizing the step-flow growth.
Keywords
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