Infrared dielectric functions and phonon modes of wurtzite MgxZn1-xO (x≤0.2)

被引：65
作者：
Bundesmann, C
Schubert, M
Spemann, D
Butz, T
Lorenz, M
Kaidashev, EM
Grundmann, M
Ashkenov, N
Neumann, H
Wagner, G
机构：
[1] Univ Leipzig, Fak Phys & Geowissensch, Inst Expt Phys 2, D-04103 Leipzig, Germany
[2] Inst Oberflachenmodifizierung EV, D-04303 Leipzig, Germany
[3] Univ Leipzig, Inst Nichtklass Chem EV, D-04318 Leipzig, Germany
来源：
APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 13期
关键词：
D O I：
10.1063/1.1509862
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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 0less than or equal toxless than or equal to0.2 prepared by pulsed-laser deposition on c-plane sapphire substrates were obtained from infrared spectroscopic ellipsometry (380-1200 cm(-1)) and Raman scattering studies. A two-mode behavior is found for the modes with E-1 symmetry, a lattice mode and an impurity-type mode are obtained for the A(1) symmetry phonons. Model dielectric function spectra will become useful for future infrared ellipsometry analysis of complex MgxZn1-xO-based heterostructures. (C) 2002 American Institute of Physics.
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页码：2376 / 2378
页数：3
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