Physics – Condensed Matter – Materials Science
Scientific paper
2007-10-02
Nano Lett.; (Letter); 2007; 7(9); 2584-2589
Physics
Condensed Matter
Materials Science
20 pages, 7 figures
Scientific paper
10.1021/nl070874k
Al(0.37)Ga(0.63)As nanowires (NWs) were grown in a molecular beam epitaxy system on GaAs(111)B substrates. Micro-photoluminescence measurements and energy dispersive X-ray spectroscopy indicated a core-shell structure and Al composition gradient along the NW axis, producing a potential minimum for carrier confinement. The core-shell structure formed during the growth as a consequence of the different Al and Ga adatom diffusion lengths.
Chen Chian-Chou
Couteau Christophe
Fradin C.
LaPierre R. R.
Shehata S.
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