Infrared dielectric functions and phonon modes of wurtzite Mg xZn1-xO(x≤0.2)

C. Bundesmann; M. Schubert; D. Spemann; T. Butz; M. Lorenz; E. M. Kaidashev; M. Grundmann; N. Ashkenov; H. Neumann; G. Wagner

doi:10.1063/1.1509862

Infrared dielectric functions and phonon modes of wurtzite Mg _xZn_1-xO(x≤0.2)

C. Bundesmann, M. Schubert, D. Spemann, T. Butz, M. Lorenz, E. M. Kaidashev, M. Grundmann, N. Ashkenov, H. Neumann, G. Wagner

Research output: Contribution to journal › Article › peer-review

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Abstract

Infrared dielectric function spectra and phonon modes with polarization parallel and perpendicular to the c axis of high quality, highly relaxed, and single crystalline wurtzite Mg_xZn_1-xO films with 0≤x≤0.2 prepared by pulsed-laser deposition on c-plane sapphire substrates were obtained from infrared spectroscopic ellipsometry (380-1200cm ^-1) and Raman scattering studies. A two-mode behavior is found for the modes with E₁ symmetry, a lattice mode and an impurity-type mode are obtained for the A₁ symmetry phonons. Model dielectric function spectra will become useful for future infrared ellipsometry analysis of complex Mg_xZn_1-xO-based heterostructures.

Original language	English (US)
Pages (from-to)	2376-2378
Number of pages	3
Journal	Applied Physics Letters
Volume	81
Issue number	13
DOIs	https://doi.org/10.1063/1.1509862
State	Published - Sep 23 2002
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "Infrared dielectric function spectra and phonon modes with polarization parallel and perpendicular to the c axis of high quality, highly relaxed, and single crystalline wurtzite MgxZn1-xO films with 0≤x≤0.2 prepared by pulsed-laser deposition on c-plane sapphire substrates were obtained from infrared spectroscopic ellipsometry (380-1200cm -1) and Raman scattering studies. A two-mode behavior is found for the modes with E1 symmetry, a lattice mode and an impurity-type mode are obtained for the A1 symmetry phonons. Model dielectric function spectra will become useful for future infrared ellipsometry analysis of complex MgxZn1-xO-based heterostructures.",

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T1 - Infrared dielectric functions and phonon modes of wurtzite Mg xZn1-xO(x≤0.2)

AU - Bundesmann, C.

AU - Schubert, M.

AU - Spemann, D.

AU - Butz, T.

AU - Lorenz, M.

AU - Kaidashev, E. M.

AU - Grundmann, M.

AU - Ashkenov, N.

AU - Neumann, H.

AU - Wagner, G.

PY - 2002/9/23

Y1 - 2002/9/23

N2 - Infrared dielectric function spectra and phonon modes with polarization parallel and perpendicular to the c axis of high quality, highly relaxed, and single crystalline wurtzite MgxZn1-xO films with 0≤x≤0.2 prepared by pulsed-laser deposition on c-plane sapphire substrates were obtained from infrared spectroscopic ellipsometry (380-1200cm -1) and Raman scattering studies. A two-mode behavior is found for the modes with E1 symmetry, a lattice mode and an impurity-type mode are obtained for the A1 symmetry phonons. Model dielectric function spectra will become useful for future infrared ellipsometry analysis of complex MgxZn1-xO-based heterostructures.

AB - Infrared dielectric function spectra and phonon modes with polarization parallel and perpendicular to the c axis of high quality, highly relaxed, and single crystalline wurtzite MgxZn1-xO films with 0≤x≤0.2 prepared by pulsed-laser deposition on c-plane sapphire substrates were obtained from infrared spectroscopic ellipsometry (380-1200cm -1) and Raman scattering studies. A two-mode behavior is found for the modes with E1 symmetry, a lattice mode and an impurity-type mode are obtained for the A1 symmetry phonons. Model dielectric function spectra will become useful for future infrared ellipsometry analysis of complex MgxZn1-xO-based heterostructures.

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Infrared dielectric functions and phonon modes of wurtzite Mg _xZn_1-xO(x≤0.2)

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