Gocalinska, A;Manganaro, M;Juska, G;Dimastrodonato, V;Thomas, K;Joyce, BA;Zhang, J;Vvedensky, DD;Pelucchi, E

2014

April

Applied Physics Letters

Unusual nanostructures of "lattice matched" InP on AlInAs

Validated

Altmetric: 3 ()

MOLECULAR-BEAM EPITAXY SPINODAL DECOMPOSITION INP(001) GROWTH

104

We show that the morphology of the initial monolayers of InP on Al0.48In0.52As grown by metalorganic vapor-phase epitaxy does not follow the expected layer-by-layer growth mode of lattice-matched systems, but instead develops a number of low-dimensional structures, e. g., quantum dots and wires. We discuss how the macroscopically strain-free heteroepitaxy might be strongly affected by local phase separation/alloying-induced strain and that the preferred aggregation of adatom species on the substrate surface and reduced wettability of InP on AlInAs surfaces might be the cause of the unusual (step) organization and morphology. (C) 2014 AIP Publishing LLC.

MELVILLE

0003-6951

10.1063/1.4871086