Lattice vibration of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">ZnSe</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Te</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>epilayers grown by molecular-beam epitaxy

Yang, C. S.; Chou, Wu Ching; Chen, D. M.; Ro, C. S.; Shen, Ji‐Lin; Yang, Tzuen Rong

doi:10.1103/physrevb.59.8128

Cited by 22 publications

(14 citation statements)

References 19 publications

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“…-TO Te Zn−Se band. The LO-TO inverted splitting is large at intermediate x values, and further increases with (1−x), as evidenced by Burlakov et al 13 Then it vanishes in the Te-and Sedilute limits, as observed by Yang et al 19 In brief, all the 'anomalous' features in the Raman/IR spectra of ZnTeSe find a natural assignment within the percolation model, on a quantitative basis. Actually, in retrospect there is a quasi-perfect analogy between the phonon mode behaviors of ZnTeSe (this work) and InGaP (Ref.…”

Section: (To Lo) Raman Lineshapesmentioning

confidence: 70%

“…17 In fact, already three decades ago Artamonov et al 18 mentioned an 'evident analogy' between the phonon behaviors of InGaP and ZnTeSe. Later on, Yang et al 19 proposed to reclassify ZnTeSe as a type (iii) system, not as a type (ii). Altogether this suggests that a InGaP-like version of the percolation model should apply to ZnTeSe.…”

Section: Percolation Picture For Znte1−xsexmentioning

confidence: 99%

“…Representative sets of (TO, LO) frequencies in ZnTeSe obtained from Raman/IR analysis, as taken in the literature, 13,19,20 are displayed in Fig. 3.…”

Section: Percolation Picture For Znte1−xsexmentioning

confidence: 99%

“…In particular, singularities in the TO -frequency occur at the bond percolation thresholds, where the minor A-B (x B =0. 19) and A-C (x C =0.81) bonds become connected throughout the crystal. This is absent with the MREI-VCA.…”

Section: Introductionmentioning

confidence: 99%

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Unification of the phonon mode behavior in semiconductor alloys: Theory andab initiocalculations

Pagès¹,

Postnikov²,

Kassem³

et al. 2008

Phys. Rev. B

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We demonstrate how to overcome serious problems in understanding and classification of vibration spectra in semiconductor alloys, following from traditional use of the virtual crystal approximation (VCA). We show that such different systems as InGaAs (1-bond→1-mode behavior), InGaP (modified 2-mode) and ZnTeSe (2-bond→1-mode) obey in fact the same phonon mode behavior -hence probably a universal one -of a percolation-type (1-bond→2-mode). The change of paradigm from the 'VCA insight' (an averaged microscopic one) to the 'percolation insight' (a mesoscopic one) offers a promising link towards the understanding of alloy disorder. The discussion is supported by ab initio simulation of the phonon density of states at the zone-center of representative supercells at intermediary composition (ZnTeSe) and at the impurity-dilute limits (all systems). In particular, we propose a simple ab initio 'protocol' to estimate the basic input parameters of our semi-empirical 'percolation' model for the calculation of the 1-bond→2-mode vibration spectra of zincblende alloys. With this, the model turns self-sufficient.

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Section: (To Lo) Raman Lineshapesmentioning

confidence: 70%

Section: Percolation Picture For Znte1−xsexmentioning

confidence: 99%

“…Representative sets of (TO, LO) frequencies in ZnTeSe obtained from Raman/IR analysis, as taken in the literature, 13,19,20 are displayed in Fig. 3.…”

Section: Percolation Picture For Znte1−xsexmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Unification of the phonon mode behavior in semiconductor alloys: Theory andab initiocalculations

Pagès¹,

Postnikov²,

Kassem³

et al. 2008

Phys. Rev. B

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“…2, we show representative sets of optical phonon frequencies in ZnSe x Te 1-x over the whole composition range, as obtained from Raman/IR analysis [4,8,9]. In the discussion, we focus on TO modes (open symbols), as usual.…”

mentioning

confidence: 99%

Description of vibrational properties of random alloy ZnTe_1–xSe_x within the percolation model

Souhabi¹,

Chafi²,

Kassem³

et al. 2009

Phys. Status Solidi (c)

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We discuss the classification of the phonon type behavior of semiconductor alloys as apparent in the Raman and infrared spectra, i.e. in terms of types (i) 1‐bond→1‐mode and (ii) 2‐bond→1‐mode (both covered by the Modified Random Element Isodisplacement model, operating at the macroscopic scale), and also (iii) the modified 2‐mode type (exceptional), in the framework of the recent 1‐bond→2‐mode percolation model based on a description of the alloy disorder at the mesoscopic scale. The leading systems of types (i) and (iii), i.e., InGaAs and InGaP, respectively, were earlier shown to obey the percolation model. The aim of this work is to investigate whether the percolation model further extends to the leading system of the last type (ii), i.e. ZnTeSe. With this end in view, we perform a careful re‐examination of the Raman and infrared spectra of this alloy, as available in the literature. Special attention is awarded to the discussion and modeling of the puzzling multi‐mode infrared reflectivity spectra. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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ZnSe: phase transitions

Rößler

2013

New Data and Updates for Several Semiconductors With Chalcopyrite Structure, for Several II-VI Compounds and Diluted Magnetic I

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Lattice vibration ofZnSe1−xTexepilayers grown by molecular-beam epitaxy

Cited by 22 publications

References 19 publications

Unification of the phonon mode behavior in semiconductor alloys: Theory andab initiocalculations

Unification of the phonon mode behavior in semiconductor alloys: Theory andab initiocalculations

Description of vibrational properties of random alloy ZnTe_1–xSe_x within the percolation model

ZnSe: phase transitions

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Lattice vibration ofZnSe1−xTexepilayers grown by molecular-beam epitaxy

Cited by 22 publications

References 19 publications

Unification of the phonon mode behavior in semiconductor alloys: Theory andab initiocalculations

Unification of the phonon mode behavior in semiconductor alloys: Theory andab initiocalculations

Description of vibrational properties of random alloy ZnTe1–xSex within the percolation model

ZnSe: phase transitions

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Product

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Description of vibrational properties of random alloy ZnTe_1–xSe_x within the percolation model