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Direct measure of strain and electronic structure in GaAs/GaP core-shell nanowires

Montazeri, Mohammad; Fickenscher, M A; Smith, Leigh M; Jackson, Howard E; Yarrison-Rice, Jan M; Kang, Jung-Hyun; Gao, Qiang; Jagadish, Chennupati; Guo, Yanan; Zou, Jin; Pistol, Mats-Erik; Pryor, Craig E.; Tan, Hark Hoe


Highly strained GaAs/GaP nanowires of excellent optical quality were grown with 50 nm diameter GaAs cores and 25 nm GaP shells. Photoluminescence from these nanowires is observed at energies dramatically shifted from the unstrained GaAs free exciton emission energy by 260 meV. Using Raman scattering, we show that it is possible to separately measure the degree of compressive and shear strain of the GaAs core and show that the Raman response of the GaP shell is consistent with tensile strain....[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Nano Letters
DOI: 10.1021/nl903547r


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