Anharmonic frequency shift of long-wavelength phonons in As and Sb
- 30 October 2000
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 77 (18), 2924-2925
- https://doi.org/10.1063/1.1320864
Abstract
Raman scattering was used to study the temperature dependence of the phonon frequencies of Eg and A1g modes of crystalline arsenic and antimony. The partial derivative of the frequency versus temperature for both materials was determined from a linear fitting approximation. The real anharmonic contribution to the shift was obtained after correction had been made for the contribution of thermal expansion.Keywords
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