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Fundamental and second-order phonon processes in CdTe and ZnTe
Abstract
Fundamental and higher-order photon-phonon interactions dominate the far infrared absorption and dispersion spectrum of most semiconductors and dielectrics. We present a detailed investigation of the temperature dependence of the dielectric function of the important II-VI semiconductors CdTe and ZnTe in the frequency range below 3 THz, between 10 and 300 K. From the dielectric function we determine the temperature dependence of the fundamental transverse-optical (TO) frequency in CdTe and ZnTe as well as the TO phonon damping rate in CdTe, and the dynamic ionic charge of both crystals is inferred from the measurements. Furthermore, our experimental data enable unambiguous assignment of low-frequency absorption bands to sum and difference combinations of fundamental phonon modes at critical points away from the Brillouin zone center.
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Cites
Free-space electro-optic sampling of terahertz beams
Wu, Q., & Zhang, X.-C. (1995) · Applied Physics Letters · doi:10.1063/1.114909 · Cited by 993
Cited by
Terahertz spectroscopy and imaging - Modern techniques and applications
Jepsen, P. U., Cooke, D. G., & Koch, M. (2011) · Laser & Photonics Reviews · doi:10.1002/lpor.201000011 · Cited by 2,091
Self-citationMetal-insulator phase transition in aVO2thin film observed with terahertz spectroscopy
Jepsen, P. U., Fischer, B. M., Thoman, A., Helm, H., Suh, J. Y., Lopez, R., & Haglund, R. F. (2006) · Physical Review B · doi:10.1103/physrevb.74.205103 · Cited by 396
Noncovalent intermolecular forces in polycrystalline and amorphous saccharides in the far infrared
Walther, M., Fischer, B. M., & Uhd Jepsen, P. (2003) · Chemical Physics · doi:10.1016/s0301-0104(03)00031-4 · Cited by 369
Self-citationDesign of high-energy terahertz sources based on optical rectification
Fülöp, J. A., Pálfalvi, L., Almási, G., & Hebling, J. (2010) · Optics Express · doi:10.1364/oe.18.012311 · Cited by 301
Terahertz time-domain spectroscopy of transient metallic and superconducting states
Orenstein, J., & Dodge, J. S. (2015) · Physical Review B · doi:10.1103/physrevb.92.134507 · Cited by 50
Metadata
- Authors
- Schall, M., Walther, M., & Uhd Jepsen, P.
- Venue
- Physical Review B
- Publisher
- American Physical Society (APS)
- Published
- 2001-08-03
- Volume
- 64
- Issue
- 9
- ISSN
- 0163-1829 (ISSN-L)
- 1095-3795
- OpenAlex
- W2130593505
- Cited by
- 167
- References
- 1
- FWCI
- 5.44
- Type
- journal article
- Language
- en
- Open access
- closed
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