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Title

Spatially resolved Raman spectroscopy on indium-catalyzed core-shell germanium nanowires: size effects

AuthorsXiang, Y.; Morante, Joan Ramon; Arbiol, Jordi ; Fontcuberta i Morral, Anna
Issue Date2010
PublisherInstitute of Physics Publishing
CitationNanotechnology 21(10): 105703 (2010)
AbstractThe structure of indium-catalyzed germanium nanowires is investigated by atomic force microscopy, scanning confocal Raman spectroscopy and transmission electron microscopy. The nanowires are formed by a crystalline core and an amorphous shell. We find that the diameter of the crystalline core varies along the nanowire, down to few nanometers. Phonon confinement effects are observed in the regions where the crystalline region is the thinnest. The results are consistent with the thermally insulating behavior of the core-shell nanowires.
URIhttp://hdl.handle.net/10261/144386
DOIhttp://dx.doi.org/10.1088/0957-4484/21/10/105703
Identifiersdoi: 10.1088/0957-4484/21/10/105703
issn: 0957-4484
e-issn: 1361-6528
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