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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2003, Volume 77, Issue 3, Pages 171–174
(Mi jetpl2731)
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This article is cited in 7 scientific papers (total in 7 papers)
CONDENSED MATTER
Raman scattering in multilayer structures with CdTe quantum dots in ZnTe
L. K. Vodop'yanova, V. S. Vinogradova, N. N. Mel'nika, G. Karczewskib a P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow
b Institute of Physics, Polish Academy of Sciences
Abstract:
Raman spectra in superlattices composed of layers of self-assembled CdTe quantum dots separated by ZnTe barriers are investigated. As the barrier thickness increases, a high-frequency shift of all peaks is observed, which is explained by a decrease in the lattice constant averaged over the volume of the entire structure. Peaks are found at a CdTe TO mode frequency of 140 cm$^{-1}$ and also at 120 cm$^{-1}$. The first peak is assigned to the symmetric Coulomb (interface) mode of the quantum dot material, and the low-frequency peak is assigned to the symmetric mode of the phonons captured in the quantum dot. This combination of modes in structures with quantum dots has not been observed previously.
Received: 27.12.2002
Citation:
L. K. Vodop'yanov, V. S. Vinogradov, N. N. Mel'nik, G. Karczewski, “Raman scattering in multilayer structures with CdTe quantum dots in ZnTe”, Pis'ma v Zh. Èksper. Teoret. Fiz., 77:3 (2003), 171–174; JETP Letters, 77:3 (2003), 143–145
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https://www.mathnet.ru/eng/jetpl2731 https://www.mathnet.ru/eng/jetpl/v77/i3/p171
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Abstract page: | 152 | Full-text PDF : | 54 | References: | 35 |
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