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Optical and acoustical phonon modes in superlattices with SiGe QDs

Optical and acoustical phonon modes in superlattices with SiGe QDs

Multilayers with SiGe nanoislands grown in a broad temperature range (300-600 °C) are studied using Raman spectroscopy, HRXRD and AFM. It is shown that the islands are fully strained when obtained at 300 °C and gradually relax with the growth temperature increase. The main contribution to the Raman...

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Main Authors: Yukhymchuk, V.O., Dzhagan, V.M., Klad’ko, V.P., Lytvyn, O.S., Machulin, V.F., Valakh, M.Ya., Yaremko, A.M., Milekhin, A.G., Krasil’nik, Z.F., Novikov, A.V., Mestres, N., Pascual, J.
Format: Article
Language:English
Published: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2004
Series:Semiconductor Physics Quantum Electronics & Optoelectronics
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/119224
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spelling irk-123456789-1192242017-06-06T03:02:57Z Optical and acoustical phonon modes in superlattices with SiGe QDs Yukhymchuk, V.O. Dzhagan, V.M. Klad’ko, V.P. Lytvyn, O.S. Machulin, V.F. Valakh, M.Ya. Yaremko, A.M. Milekhin, A.G. Krasil’nik, Z.F. Novikov, A.V. Mestres, N. Pascual, J. Multilayers with SiGe nanoislands grown in a broad temperature range (300-600 °C) are studied using Raman spectroscopy, HRXRD and AFM. It is shown that the islands are fully strained when obtained at 300 °C and gradually relax with the growth temperature increase. The main contribution to the Raman peaks caused by scattering on folded acoustic phonons in multilayers (n ≤ 10) with nanoislands is due to the islands themselves. The enhancement of the scattering intensity due to resonance of the exciting light with the electronic transitions inside the islands is shown to play a significant role. 2004 Article Optical and acoustical phonon modes in superlattices with SiGe QDs / V.O. Yukhymchuk, V.M. Dzhagan, V.P. Klad’ko, O.S. Lytvyn, V.F. Machulin, M.Ya. Valakh, A.M. Yaremko, A.G. Milekhin, Z.F. Krasil’nik, A.V. Novikov, N. Mestres, J. Pascual // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2004. — Т. 7, № 4. — С. 456-461. — Бібліогр.: 20 назв. — англ. 1560-8034 PACS: 63.22.+m, 68.37.Ps, 68.65.Hb, 72.10.Di http://dspace.nbuv.gov.ua/handle/123456789/119224 en Semiconductor Physics Quantum Electronics & Optoelectronics Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
description Multilayers with SiGe nanoislands grown in a broad temperature range (300-600 °C) are studied using Raman spectroscopy, HRXRD and AFM. It is shown that the islands are fully strained when obtained at 300 °C and gradually relax with the growth temperature increase. The main contribution to the Raman peaks caused by scattering on folded acoustic phonons in multilayers (n ≤ 10) with nanoislands is due to the islands themselves. The enhancement of the scattering intensity due to resonance of the exciting light with the electronic transitions inside the islands is shown to play a significant role.
format Article
author Yukhymchuk, V.O.
Dzhagan, V.M.
Klad’ko, V.P.
Lytvyn, O.S.
Machulin, V.F.
Valakh, M.Ya.
Yaremko, A.M.
Milekhin, A.G.
Krasil’nik, Z.F.
Novikov, A.V.
Mestres, N.
Pascual, J.
spellingShingle Yukhymchuk, V.O.
Dzhagan, V.M.
Klad’ko, V.P.
Lytvyn, O.S.
Machulin, V.F.
Valakh, M.Ya.
Yaremko, A.M.
Milekhin, A.G.
Krasil’nik, Z.F.
Novikov, A.V.
Mestres, N.
Pascual, J.
Optical and acoustical phonon modes in superlattices with SiGe QDs
Semiconductor Physics Quantum Electronics & Optoelectronics
author_facet Yukhymchuk, V.O.
Dzhagan, V.M.
Klad’ko, V.P.
Lytvyn, O.S.
Machulin, V.F.
Valakh, M.Ya.
Yaremko, A.M.
Milekhin, A.G.
Krasil’nik, Z.F.
Novikov, A.V.
Mestres, N.
Pascual, J.
author_sort Yukhymchuk, V.O.
title Optical and acoustical phonon modes in superlattices with SiGe QDs
title_short Optical and acoustical phonon modes in superlattices with SiGe QDs
title_full Optical and acoustical phonon modes in superlattices with SiGe QDs
title_fullStr Optical and acoustical phonon modes in superlattices with SiGe QDs
title_full_unstemmed Optical and acoustical phonon modes in superlattices with SiGe QDs
title_sort optical and acoustical phonon modes in superlattices with sige qds
publisher Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
publishDate 2004
url http://dspace.nbuv.gov.ua/handle/123456789/119224
citation_txt Optical and acoustical phonon modes in superlattices with SiGe QDs / V.O. Yukhymchuk, V.M. Dzhagan, V.P. Klad’ko, O.S. Lytvyn, V.F. Machulin, M.Ya. Valakh, A.M. Yaremko, A.G. Milekhin, Z.F. Krasil’nik, A.V. Novikov, N. Mestres, J. Pascual // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2004. — Т. 7, № 4. — С. 456-461. — Бібліогр.: 20 назв. — англ.
series Semiconductor Physics Quantum Electronics & Optoelectronics
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first_indexed 2023-10-18T20:34:03Z
last_indexed 2023-10-18T20:34:03Z
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