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Main Title: Phonon deformation potentials in wurtzite GaN and ZnO determined by uniaxial pressure dependent Raman measurements
Author(s): Callsen, Gordon
Reparaz, Juan Sebastián
Wagner, Markus R.
Kirste, Ronny
Nenstiel, Christian
Hoffmann, Axel
Phillips, Matthew R.
Type: Article
Language Code: en
Abstract: We report the phonon deformation potentials of wurtzite GaN and ZnO for all zone center optical phonon modes determined by Raman measurements as a function of uniaxial pressure. Despite all the structural and optical similarities between these two material systems, the pressure dependency of their vibrational spectra exhibits fundamental distinctions, which is attributed to their different bond ionicities. In addition, the LO-TO splitting of the A1 and E1 phonon modes is analyzed which yields insight into the uniaxial pressure dependency of Born’s transverse effective charge e∗T.
Issue Date: 9-Feb-2011
Date Available: 27-Feb-2020
DDC Class: 530 Physik
Subject(s): phonon deformation
Raman measurements
Raman spectra
Sponsor/Funder: DFG, 43659573, SFB 787: Halbleiter - Nanophotonik: Materialien, Modelle, Bauelemente
DFG, 53182490, EXC 314: Unifying Concepts in Catalysis
Journal Title: Applied Physics Letters
Publisher: American Institute of Physics (AIP)
Publisher Place: Melville, NY
Volume: 98
Issue: 6
Article Number: 061906
Publisher DOI: 10.1063/1.3554434
EISSN: 1077-3118
ISSN: 0003-6951
Notes: “This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 98, 061906 (2011) and may be found at
Appears in Collections:FG Optische Charakterisierung von Halbleitern » Publications

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