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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2019, Volume 110, Issue 10, Pages 687–691
DOI: https://doi.org/10.1134/S0370274X19220090 (Mi jetpl6051) 		 
This article is cited in 3 scientific papers (total in 3 papers)

CONDENSED MATTER

Direct Raman spectroscopy observation of quantum isotope effects in isotopically pure germanium single crystals

P. V. Enkovich, V. V. Brazhkin, S. G. Lyapin

Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow, 108840 Russia
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DOI: https://doi.org/10.1134/S0370274X19220090
Abstract: High-precision studies of Raman scattering on isotopically pure $^{70}$Ge and $^{74}$Ge single crystals have been performed in the temperature range from $80$ to $296$ K. It has been found that a difference between the normalized Raman frequencies of the $^{70}$Ge and $^{74}$Ge isotopes measured with an accuracy of $0.05$ cm$^{-1}$ at temperatures $T < 100$ K is about $0.12$ cm$^{-1}$, which certainly indicates the manifestation of quantum isotope effects.
Funding agency Grant number
Russian Foundation for Basic Research 18-32-00693
18-02-00183/19
Russian Science Foundation 19-12-00111
The work of P.V.E. (measurements, data processing, preparation of the manuscript) was supported by the Russian Foundation for Basic Research (project no. 18-32-00693) and by the Russian Science Foundation (project no. 19-12-00111). The work of V.V.B. (data processing, preparation of the manuscript) was supported by the Russian Science Foundation (project no. 19-12-00111). The work of S.G.L. (measurements) was supported by the Russian Foundation for Basic Research (project no. 18-02-00183/19).
Received: 09.10.2019
Revised: 17.10.2019
Accepted: 17.10.2019
English version:
Journal of Experimental and Theoretical Physics Letters, 2019, Volume 110, Issue 10, Pages 687–690
DOI: https://doi.org/10.1134/S0021364019220053
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: P. V. Enkovich, V. V. Brazhkin, S. G. Lyapin, “Direct Raman spectroscopy observation of quantum isotope effects in isotopically pure germanium single crystals”, Pis'ma v Zh. Èksper. Teoret. Fiz., 110:10 (2019), 687–691; JETP Letters, 110:10 (2019), 687–690
Citation in format AMSBIB
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