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Updated: Jun 16, 2026

Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
Published on: April 28, 2016
Spatially resolved Raman spectroscopy on indium-catalyzed core-shell germanium nanowires: size effects
1Physik Department, Walter Schottky Institut, Technische Universitaet Muenchen, Am Coulombwall 3, D-85748 Garching, Germany.
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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