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Planar Force-constant Method for Lattice Dynamics of Cubic InN

Published online by Cambridge University Press:  17 March 2011

H. W. Leite Alves,
J. L. A. Alves,
L. M. R. Scolfaro and
J. R. Leite
H. W. Leite Alves
Affiliation:
Departamento de Ciências Naturais, FUNREI, CP 110, CEP 36.300-000, São João del Rei, MG, Brazil
J. L. A. Alves
Affiliation:
Departamento de Ciências Naturais, FUNREI, CP 110, CEP 36.300-000, São João del Rei, MG, Brazil
L. M. R. Scolfaro
Affiliation:
Instituto de Física da Universidade de São Paulo, CP 66.318, CEP 05.389-970, São Paulo, SP, Brazil
J. R. Leite
Affiliation:
Instituto de Física da Universidade de São Paulo, CP 66.318, CEP 05.389-970, São Paulo, SP, Brazil
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Abstract

Using the density-functional theory within the Full Potential Linear Augmented Plane-Wave (FP-LAPW) method, we have calculated, in this work, the equation of state, the effective charges and the phonon dispersion along [100] and [111] directions for the cubic Indium Nitride(c-InN), including hydrostatic strains dependence. A good agreement with the micro-Raman scattering experiment is obtained for the phonon modes at ã. Our results show that the apparent divergence between the known experimental results is a consequence of hydrostatic effects on the sample due to differences of the used Raman methods.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 639: Symposium G – GaN and Related Alloys-2000 , 2000, G6.58
Copyright
Copyright © Materials Research Society 2001

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References

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