Abstract
We present a summary of recent progress towards the understanding of the valence-band physics in wurtzite GaN. Systematic studies have been performed on the strain dependence of the free exciton resonance energies by photoreflectance measurements using well-characterized samples. Analyzing the experimental data with the Hamiltonian appropriate for the valence bands, the values have been determined of the crystal field splitting, the spin-orbit splitting, the shear deformation potential constants, and the energy gap in the unstrained crystal. Discussions are given on the strain dependence of the energy gaps, of the effective masses, and of the binding energies for the free exciton ground states as well as on the valence band parameters. Using the obtained values and the generalized Elliott formula, the fundamental optical absorption spectra obtained experimentally were analyzed. The values of the elastic stiffness constants, which play a crucial role to determine the shear deformation potential constants, are also given.
| Original language | English |
|---|---|
| Title of host publication | Materials Research Society Symposium - Proceedings |
| Editors | C.R. Abernathy, H. Amano, J.C. Zolper |
| Publisher | Materials Research Society |
| Pages | 445-456 |
| Number of pages | 12 |
| Volume | 468 |
| Publication status | Published - 1997 |
| Event | Proceedings of the 1997 MRS Spring Symposium - San Francisco, CA, USA Duration: 1997 Apr 1 → 1997 Apr 4 |
Other
| Other | Proceedings of the 1997 MRS Spring Symposium |
|---|---|
| City | San Francisco, CA, USA |
| Period | 97/4/1 → 97/4/4 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
Cite this
Valence band physics in wurtzite GaN. / Azuhata, T.; Sota, Takayuki; Chichibu, S.; Kuramata, A.; Horino, K.; Yamaguchi, M.; Yagi, T.; Nakamura, S.
Materials Research Society Symposium - Proceedings. ed. / C.R. Abernathy; H. Amano; J.C. Zolper. Vol. 468 Materials Research Society, 1997. p. 445-456.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Valence band physics in wurtzite GaN
AU - Azuhata, T.
AU - Sota, Takayuki
AU - Chichibu, S.
AU - Kuramata, A.
AU - Horino, K.
AU - Yamaguchi, M.
AU - Yagi, T.
AU - Nakamura, S.
PY - 1997
Y1 - 1997
N2 - We present a summary of recent progress towards the understanding of the valence-band physics in wurtzite GaN. Systematic studies have been performed on the strain dependence of the free exciton resonance energies by photoreflectance measurements using well-characterized samples. Analyzing the experimental data with the Hamiltonian appropriate for the valence bands, the values have been determined of the crystal field splitting, the spin-orbit splitting, the shear deformation potential constants, and the energy gap in the unstrained crystal. Discussions are given on the strain dependence of the energy gaps, of the effective masses, and of the binding energies for the free exciton ground states as well as on the valence band parameters. Using the obtained values and the generalized Elliott formula, the fundamental optical absorption spectra obtained experimentally were analyzed. The values of the elastic stiffness constants, which play a crucial role to determine the shear deformation potential constants, are also given.
AB - We present a summary of recent progress towards the understanding of the valence-band physics in wurtzite GaN. Systematic studies have been performed on the strain dependence of the free exciton resonance energies by photoreflectance measurements using well-characterized samples. Analyzing the experimental data with the Hamiltonian appropriate for the valence bands, the values have been determined of the crystal field splitting, the spin-orbit splitting, the shear deformation potential constants, and the energy gap in the unstrained crystal. Discussions are given on the strain dependence of the energy gaps, of the effective masses, and of the binding energies for the free exciton ground states as well as on the valence band parameters. Using the obtained values and the generalized Elliott formula, the fundamental optical absorption spectra obtained experimentally were analyzed. The values of the elastic stiffness constants, which play a crucial role to determine the shear deformation potential constants, are also given.
UR - http://www.scopus.com/inward/record.url?scp=0030653269&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030653269&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0030653269
VL - 468
SP - 445
EP - 456
BT - Materials Research Society Symposium - Proceedings
A2 - Abernathy, C.R.
A2 - Amano, H.
A2 - Zolper, J.C.
PB - Materials Research Society
ER -