Effect of isotopic composition on phonon modes. Static atomic displacements in crystals

A.P. Zhernov^a, A.V. Inyushkin^b
^aInstitute of Superconductivity and Solid-State Physics, Russian Research Centre ‘Kurchatov Institute’, pl. Kurchatova 1, Moscow, Russian Federation
^bInstitute of Molecular Physics, Russian Research Center ‘Kurchatov Institute’, pl. Kurchatova 1, Moscow, 123182, Russian Federation

Theoretical and experimental work relevant to isotopic (mass) effects in solids is reviewed. The effect of isotopic composition on the phonon spectrum is discussed with particular emphasis on chemically pure and nearly perfect semiconductor single crystals. The fundamental role of polarization vectors in polyatomic compounds is pointed out. Static atomic displacements around isotopic impurities — an effect potentially leading to considerable phonon (and electron) scattering in strongly anharmonic crystals — are also discussed.

PACS: 61.66.−f, 61.72.Ji, 63.20.−e (all)
DOI: 10.1070/PU2001v044n08ABEH000965
URL: https://ufn.ru/en/articles/2001/8/b/
Web of Science

000173352300002
Citation: Zhernov A P, Inyushkin A V "Effect of isotopic composition on phonon modes. Static atomic displacements in crystals" Phys. Usp. 44 785–811 (2001)

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Оригинал: Жернов А П, Инюшкин А В «Влияние композиции изотопов на фононные моды. Статические атомные смещения в кристаллах» УФН 171 827–854 (2001); DOI: 10.3367/UFNr.0171.200108b.0827

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