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Temperature dependence of Raman scattering from the high-pressure phases of Si induced by indentation
被引:23
|作者:
Johnson, B. C.
[1
]
Haberl, B.
[2
]
Bradby, J. E.
[2
]
McCallum, J. C.
[1
]
Williams, J. S.
[2
]
机构:
[1] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia
[2] Australian Natl Univ, Res Sch Phys & Engn, Dept Elect Mat Engn, Canberra, ACT 0200, Australia
来源:
PHYSICAL REVIEW B
|
2011年
/
83卷
/
23期
基金:
澳大利亚研究理事会;
关键词:
METASTABLE PHASES;
AMORPHOUS-SILICON;
AMBIENT PRESSURE;
OPTICAL PHONONS;
SUPERCONDUCTIVITY;
GE;
SEMICONDUCTORS;
GERMANIUM;
FORMS;
NANOINDENTATION;
D O I:
10.1103/PhysRevB.83.235205
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
A micro-Raman scattering study on the linewidth and frequency shift of Si-III and Si-XII produced by indentation is presented over the temperature range 80-300 K. Measurements are compared to the Raman lines originating from the Si-I substrate. The main Si-XII Raman line shows a strong dependence on temperature and can be adequately described by anharmonic terms from the phonon proper self-energy. In contrast, the main Si-III Raman linewidth decreases with increasing temperature. A model related to electron-phonon interactions describes the data well.
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页数:8
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