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Título

Raman selection rules in uniaxial media: The nonpolar modes of Mn Ga2 Se4

AutorAlonso-Gutiérrez, P.; Sanjuán, M. L.; Morón, M. Carmen
Fecha de publicación2005
EditorAmerican Physical Society
CitaciónPhysical Review B 71(8): 085205 (2005)
ResumenIt is known that optically anisotropic media can change the polarization of light propagating inside them. As regards Raman spectroscopy, this affects the light intensity measured in different geometrical configurations and results in an apparent unfulfillment of selection rules. We present an experimental and theoretical study of such effects in the defect chalcopyrite semiconductor MnGa2Se4. Optical anisotropy is taken into account by including in the calculation of Raman intensities the phase difference appearing between ordinary and extraordinary waves as they propagate, in uniaxial media, with different velocities. Birefringence can be obtained from Raman measurements provided that the distance run by the light is known.
DescripciónUnder the terms of the Creative Commons Attribution License 3.0 (CC-BY).
Versión del editorhttp://dx.doi.org/10.1103/PhysRevB.71.085205
URIhttp://hdl.handle.net/10261/128816
DOI10.1103/PhysRevB.71.085205
Identificadoresdoi: 10.1103/PhysRevB.71.085205
issn: 1098-0121
e-issn: 1550-235X
Aparece en las colecciones: (ICMA) Artículos
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