NDLI: Lattice dynamics of Ga1−x Mn x N and Ga1−x Mn x As by first-principle calculations

Content Provider	PubMed Central
Author	Alves, Horacio W. Leite Scolfaro, LuÃsa Mr Silva, Eronides F. Da
Copyright Year	2012
Abstract	In this work, we present theoretical results, using first-principle methods associated to the virtual crystal approximation model, for the vibrational mode frequencies of both the Ga1−x Mn x N (in both cubic and hexagonal structures) and the Ga1−x Mn x As alloys, with the Mn contents in the range of 0% to 20%. The dependence of the calculated phonon frequencies with the Mn content was analyzed, and the results indicate that the phonon frequencies decrease with the increasing of Mn composition, leading to the false impression that they obey the Vegard rule in some cases. Moreover, the hexagonal Ga1−x Mn x N alloys are elastically unstable for Mn concentrations at the order of 20%, which explains in part the experimentally observed deterioration of these alloys. These findings can be used in future technologies as a guide for the synthesis of spintronic nanostructured devices, such as nanowires, based on these materials.
Related Links	http://dx.doi.org/10.1186/1556-276x-7-573
Ending Page	573
Page Count	1
Starting Page	573
File Format	PDF
ISSN	1556276X
e-ISSN	1556276X
Journal	Nanoscale Research Letters
Issue Number	1
Volume Number	7
Language	English
Publisher	Springer
Publisher Date	2012-01-01
Access Restriction	Open
Rights Holder	Springer
Subject Keyword	Materials Science(all) Condensed Matter Physics Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics

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Lattice dynamics of Ga1−xMn x N and Ga1−xMn x As by first-principle calculations

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