Spatially resolved Raman spectroscopy on indium-catalyzed core-shell germanium nanowires: size effects
Xiang, Y.; Zardo, I.; Cao, L. Y.; Garma, T.; Heiss, M.; Morante, J. R.; Arbiol, J.; Brongersma, M. L.; Morral, A. Fontcuberta I.
2010

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Abstract

The 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.

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Title Spatially resolved Raman spectroscopy on indium-catalyzed core-shell germanium nanowires: size effects
Author(s) Xiang, Y. ; Zardo, I. ; Cao, L. Y. ; Garma, T. ; Heiss, M. ; Morante, J. R. ; Arbiol, J. ; Brongersma, M. L. ; Morral, A. Fontcuberta I.
Published in Nanotechnology
Volume 21
Issue 10
Pages 105703
Date 2010
Publisher Institute of Physics
ISSN 0957-4484
Keywords
DOI https://doi.org/10.1088/0957-4484/21/10/105703
Other identifier(s) View record in Web of Science
Laboratories LMSC
Record Appears in Scientific production and competences > STI - School of Engineering > IMX - Institute of Materials > LMSC - Laboratory of Semiconductor Materials
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2011-12-16

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