Asymmetric GaAs/AlGaAs T wires with large confinement energies

H. Gislason, W. Langbein, J. M. Hvam

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22 Citations (Scopus)


We report on the design and growth of asymmetric T-shaped quantum wires with large
one-dimensional confinement energies. Prior to growth, the optimal structure for a given ~110! well
width is determined by a calculation. The structures are made by molecular beam epitaxy cleaved
edge overgrowth. We demonstrate a confinement of 54 meV in an experimental structure consisting
of a narrow ~110! oriented GaAs/Al0.3Ga0.7As quantum well overgrown on much wider
~001! oriented Al0.14Ga0.86As/Al0.3Ga0.7As wells.
Original languageEnglish
Pages (from-to)3248-3250
Number of pages3
JournalApplied Physics Letters
Issue number21
Publication statusPublished - 1996


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