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Polarized Raman spectra in GaN
Abstract
We have measured polarized Raman spectra in a 2.0 mu m GaN epitaxial layer of high quality, grown on a sapphire substrate. All symmetry-allowed optical phonons in GaN have been assigned as follows: A 1 (LO), 735 cm -1 ; A 1 (TO), 533 cm -1 ; E 1 (LO), 743 cm -1 ; E 1 (TO), 561 cm -1 ; E 2 , 144 and 569 cm -1 . Using the Lyddane-Sachs-Teller relation, the static dielectric constants of GaN for the ordinary and extraordinary directions have been estimated as epsilon perpendicular to 0 =9.28 and E/sub //0/=10.1. We have also observed quasi-LO phonons in GaN. A brief discussion on these will be given.
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Citations
Cited by
Properties of GaN and related compounds studied by means of Raman scattering
Harima, H. (2002) · Journal of Physics: Condensed Matter · doi:10.1088/0953-8984/14/38/201 · Cited by 699
Large-scale synthesis of single crystalline gallium nitride nanowires
Cheng, G. S., Zhang, L. D., Zhu, Y., Fei, G. T., Li, L., Mo, C. M., & Mao, Y. Q. (1999) · Applied Physics Letters · doi:10.1063/1.125046 · Cited by 274
Thermal conductivity of GaN, GaN71 , and SiC from 150 K to 850 K
Zheng, Q., Li, C., Rai, A., Leach, J. H., Broido, D. A., & Cahill, D. G. (2019) · Physical Review Materials · doi:10.1103/physrevmaterials.3.014601 · Cited by 177
Metadata
- Authors
- Azuhata, T., Sota, T., Suzuki, K., & Nakamura, S.
- Venue
- Journal of Physics: Condensed Matter
- Publisher
- IOP Publishing
- Published
- 1995-03-06
- Volume
- 7
- Issue
- 10
- Pages
- L129-L133
- ISSN
- 0953-8984 (ISSN-L)
- 1361-648X
- OpenAlex
- W2029827647
- Cited by
- 287
- References
- 0
- FWCI
- 8.44
- Type
- journal article
- Language
- en
- Open access
- closed
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- Azuhata, T., Sota, T., Suzuki, K., & Nakamura, S. (1995). Polarized Raman spectra in GaN. Journal of Physics: Condensed Matter. https://doi.org/10.1088/0953-8984/7/10/002
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