Raman and infrared spectra of ZnSiAs2

Koschel, W.; Sorger, F.; Baars, J.

doi:10.1016/0038-1098(74)90247-6

Cited by 20 publications

(1 citation statement)

References 9 publications

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“…The rigid ion model is certainly a crude description of the polarizability of these compounds. I n the 11-IV-V, ch the Coulomb part contributes only about 10% t,o the phonon energies [4,5,71. A calculation for the P ch-family is therefore reasonable.…”

Section: Keating Modelmentioning

confidence: 99%

Zone‐centered phonons in ternary compounds of chalcopyrite structure

Bettini

1975

Physica Status Solidi (b)

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A Keating model calculation of the zone-centered phonons in ternary compounds of the chalcopyrite (ch) structure is presented. The calculations are restricted to phonons of the phosphor(P) ch-family. The model describes reasonably well the phonons of high energy. The spectra are determined preponderantly by the masses of the cations and the force constants between nearest neighbours. The influence of the force constants between second nearest neighbours and the effective charges is small. The dependence of the individual phonons upon changes in the model parametersis unravelled. The variation of the ir-oscillator strength of the same mode in different compounds demonstrates the importance of changes in the eigenvectors. The force constants of the chalcopyrite (ch) bonds are compared to those of corresponding zincblende (zb) bonds and can be explained by changes in the bond length, The model calculations yield a symmetry assignment of the experimental spectra in CdSnP, and ZnSnP,.Die langwelligen optischen Phononen von Chalkopyritverbindungen (ch) werden mit dem Keating-Model1 berechnet. Die Berechnungen beschranken sich auf Gitterschwingungen in der Phosphor(P)-oh-Familie. Das Model1 beschreibt die hochenergetischen Phononen verniinftig. Die Spektren werden vorwiegend von den Kationenmassen und Kraftkonstanten zwischen nLchsten Nachbarn bestimmt. Der EinfluD der Kraftkonstanten zwischen ubernachsten Nachbarn und der effektiven Ladungen ist klein. Die Abhingigkeit der einzelnen Phononen von Veranderungen in den Modellparametern wird gekliirt. Die Variation der Infrarot-Oszillatorstarke derselben Mode in verschiedenen Verbindungen unterstreicht die Bedeutung der Veranderungen in den Eigenvektoren. Die Kraftkonstanten der Chalkopyritbindungen (ch) werden mit denen entsprechender Zinkblendebindungen (zb) verglichen und konnen uber Vergnderungen in der Bindungslange gedeutet werden. Die Berechnungen liefern eine Symmetriezuordnung fur die experimentellen Spektren in CdSnP, und ZnSnP,.

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Section: Keating Modelmentioning

confidence: 99%

Zone‐centered phonons in ternary compounds of chalcopyrite structure

Bettini

1975

Physica Status Solidi (b)

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Lattice Dynamics of Chalcopyrite Type Compounds. Part I. Vibrational Frequencies

Ohrendorf

Haeuseler

1999

Cryst. Res. Technol.

109

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To obtain a sound basis for calculations of the lattice dynamics of chalcopyrite type compounds the literature data for the vibrational frequencies of 14 chalcogenides and 8 pnictides crystallizing in this structure are critically analysed. This is done by introducing frequency ratios of those frequencies which can be derived from zone centre or zone boundary vibrations of the sphalerite lattice presuming similar bonding and normal co-ordinates in all compounds investigated. Based on the reliable spectra vibrational frequencies have been calculated for those compounds which have not yet been investigated or for which the results given in the literature are uncertain.

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Effektive Masse und Beweglichkeit der Löcher in p‐ZnSiAs₂

Ziegler

Siegel

1975

Cryst Res and Technol

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The density of states effect'ive mass of the valence band and impurity parameters in p-ZnSiAs, were determined from the temperature dependence of the Hall coefficient. The density of states effective mass of holes in ZnSiAs, is (0.21 & 0.03) mo. Three acceptor levels located a t 15 meV, 40 meV and 200 meV upper the valence band edge were found. A mobility analysis was carried out taking into account the interaction of the current carriers with the large number of longitudinal optical branches existing in chalcopyrite structure. The experimental values are in good accordance with the theoretical mobility curves in the temperature range from 77 K up t o 600 K.

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Raman and infrared spectra of ZnSiAs2

Cited by 20 publications

References 9 publications

Zone‐centered phonons in ternary compounds of chalcopyrite structure

Zone‐centered phonons in ternary compounds of chalcopyrite structure

Lattice Dynamics of Chalcopyrite Type Compounds. Part I. Vibrational Frequencies

Effektive Masse und Beweglichkeit der Löcher in p‐ZnSiAs₂

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Raman and infrared spectra of ZnSiAs2

Cited by 20 publications

References 9 publications

Zone‐centered phonons in ternary compounds of chalcopyrite structure

Zone‐centered phonons in ternary compounds of chalcopyrite structure

Lattice Dynamics of Chalcopyrite Type Compounds. Part I. Vibrational Frequencies

Effektive Masse und Beweglichkeit der Löcher in p‐ZnSiAs2

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Effektive Masse und Beweglichkeit der Löcher in p‐ZnSiAs₂