Raman spectra of 70Ge/76Ge isotope heterostructures with argon 488 and 514.5 nm excitations

K. Morita; K. M. Itoh; M. Nakajima; H. Harima; K. Mizoguchi; Y. Shiraki; E. E. Haller

doi:10.1016/S0921-4526(02)00573-2

Raman spectra of ⁷⁰Ge/⁷⁶Ge isotope heterostructures with argon 488 and 514.5 nm excitations

K. Morita, K. M. Itoh, M. Nakajima, H. Harima, K. Mizoguchi, Y. Shiraki, E. E. Haller

Department of Applied Physics and Physico-Informatics

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

Raman spectra of ⁷⁰Ge/⁷⁶Ge isotope bi-layer structures recorded with 488 and 514.5 nm Ar⁺ laser excitations are reported. The relative amplitudes of the ⁷⁰Ge and ⁷⁶Ge confined optical phonon peaks differ significantly for the two excitations at T =10 K, while it is almost the same for the spectra recorded at 300 K. Possible interpretations of our results are provided considering the laser penetration depths and the isotope effect on the electronic resonance Raman frequency.

Original language	English
Pages (from-to)	561-564
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	316-317
DOIs	https://doi.org/10.1016/S0921-4526(02)00573-2
Publication status	Published - 2002 May 1

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Keywords

Electronic resonance
Ge/Ge isotope superlattices
Raman scattering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Cite this

Morita, K., Itoh, K. M., Nakajima, M., Harima, H., Mizoguchi, K., Shiraki, Y., & Haller, E. E. (2002). Raman spectra of ⁷⁰Ge/⁷⁶Ge isotope heterostructures with argon 488 and 514.5 nm excitations. Physica B: Condensed Matter, 316-317, 561-564. https://doi.org/10.1016/S0921-4526(02)00573-2

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title = "Raman spectra of 70Ge/76Ge isotope heterostructures with argon 488 and 514.5 nm excitations",

abstract = "Raman spectra of 70Ge/76Ge isotope bi-layer structures recorded with 488 and 514.5 nm Ar+ laser excitations are reported. The relative amplitudes of the 70Ge and 76Ge confined optical phonon peaks differ significantly for the two excitations at T =10 K, while it is almost the same for the spectra recorded at 300 K. Possible interpretations of our results are provided considering the laser penetration depths and the isotope effect on the electronic resonance Raman frequency.",

keywords = "Electronic resonance, Ge/Ge isotope superlattices, Raman scattering",

author = "K. Morita and Itoh, {K. M.} and M. Nakajima and H. Harima and K. Mizoguchi and Y. Shiraki and Haller, {E. E.}",

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T1 - Raman spectra of 70Ge/76Ge isotope heterostructures with argon 488 and 514.5 nm excitations

AU - Morita, K.

AU - Itoh, K. M.

AU - Nakajima, M.

AU - Harima, H.

AU - Mizoguchi, K.

AU - Shiraki, Y.

AU - Haller, E. E.

PY - 2002/5/1

Y1 - 2002/5/1

N2 - Raman spectra of 70Ge/76Ge isotope bi-layer structures recorded with 488 and 514.5 nm Ar+ laser excitations are reported. The relative amplitudes of the 70Ge and 76Ge confined optical phonon peaks differ significantly for the two excitations at T =10 K, while it is almost the same for the spectra recorded at 300 K. Possible interpretations of our results are provided considering the laser penetration depths and the isotope effect on the electronic resonance Raman frequency.

AB - Raman spectra of 70Ge/76Ge isotope bi-layer structures recorded with 488 and 514.5 nm Ar+ laser excitations are reported. The relative amplitudes of the 70Ge and 76Ge confined optical phonon peaks differ significantly for the two excitations at T =10 K, while it is almost the same for the spectra recorded at 300 K. Possible interpretations of our results are provided considering the laser penetration depths and the isotope effect on the electronic resonance Raman frequency.

KW - Electronic resonance

KW - Ge/Ge isotope superlattices

KW - Raman scattering

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10.1016/S0921-4526(02)00573-2