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Vibrational, electronic and structural properties of wurtzite GaAs nanowires under hydrostatic pressure.
- Source :
- Scientific Reports; 9/26/2014, p1-5, 5p
- Publication Year :
- 2014
-
Abstract
- The structural, vibrational, and electronic properties of GaAs nanowires have been studied in the metastable wurtzite phase via Resonant Raman spectroscopy and synchrotron X-ray diffraction measurements in diamond anvil cells under hydrostatic conditions between 0 and 23 GPa. The direct band gap E<subscript>0</subscript> and the crystal field split-off gap E<subscript>0</subscript> + Δ of wurtzite GaAs increase with pressure and their values become close to those of zinc-blende GaAs at 5 GPa, while being reported slightly larger at lower pressures. Above 21 GPa, a complete structural transition from the wurtzite to an orthorhombic phase is observed in both Raman and X-ray diffraction experiments. [ABSTRACT FROM AUTHOR]
- Subjects :
- WURTZITE
GALLIUM arsenide
HYDROSTATIC pressure
X-ray diffraction
RAMAN spectroscopy
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Database :
- Complementary Index
- Journal :
- Scientific Reports
- Publication Type :
- Academic Journal
- Accession number :
- 98704585
- Full Text :
- https://doi.org/10.1038/srep06472