Anharmonic coefficients in high symmetry directions for the diamond structure
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedad Mexicana de Física A.C.
2005
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| _version_ | 1876432231191281664 |
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| author | J.L. Escamilla-Reyez |
| author_facet | J.L. Escamilla-Reyez |
| contents | Anharmonic coefficients in high symmetry directions for the diamond structure J.L. Escamilla-Reyez E. Haro-Poniatowski Física, Astronomía y Matemáticas optical diamond structure Peierls approximation phonon channels of decay Fourier transformed anharmonic coefficients In this work, the cubic anharmonic coefficients are computed analytically in high symmetry directions considering central potential interactionsup to fifth nearest neighbors for crystals with the diamond structure. It is found that certain channels of decay are forbidden. Furthermoreparticular relations between the different polarizations of the optical phonon for the cubic anharmonic coefficients are presented. Using theseresults, the validity of the so-called Peierls approximation is discussed. 2005 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57064104 https://www.redalyc.org/journal/570/57064104/ https://www.redalyc.org/journal/570/57064104/html/ https://www.redalyc.org/journal/570/57064104/57064104.epub https://www.redalyc.org/journal/570/57064104/movil en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.5 Vol.51 |
| format | Artículo científico |
| id | redalyc_57064104 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | Anharmonic coefficients in high symmetry directions for the diamond structure J.L. Escamilla-Reyez Física, Astronomía y Matemáticas optical diamond structure Peierls approximation phonon channels of decay Fourier transformed anharmonic coefficients Anharmonic coefficients in high symmetry directions for the diamond structure J.L. Escamilla-Reyez E. Haro-Poniatowski Física, Astronomía y Matemáticas optical diamond structure Peierls approximation phonon channels of decay Fourier transformed anharmonic coefficients In this work, the cubic anharmonic coefficients are computed analytically in high symmetry directions considering central potential interactionsup to fifth nearest neighbors for crystals with the diamond structure. It is found that certain channels of decay are forbidden. Furthermoreparticular relations between the different polarizations of the optical phonon for the cubic anharmonic coefficients are presented. Using theseresults, the validity of the so-called Peierls approximation is discussed. 2005 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57064104 https://www.redalyc.org/journal/570/57064104/ https://www.redalyc.org/journal/570/57064104/html/ https://www.redalyc.org/journal/570/57064104/57064104.epub https://www.redalyc.org/journal/570/57064104/movil en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.5 Vol.51 |
| title | Anharmonic coefficients in high symmetry directions for the diamond structure |
| topic | Física, Astronomía y Matemáticas optical diamond structure Peierls approximation phonon channels of decay Fourier transformed anharmonic coefficients |
| url | https://www.redalyc.org/articulo.oa?id=57064104 https://www.redalyc.org/journal/570/57064104/ https://www.redalyc.org/journal/570/57064104/html/ https://www.redalyc.org/journal/570/57064104/57064104.epub https://www.redalyc.org/journal/570/57064104/movil |