Optical transitions in MnGa{sub 2}Se{sub 4}

Journal Article · Fri Jun 15 00:00:00 EDT 2012 · Semiconductors

DOI:https://doi.org/10.1134/S1063782612060243· OSTI ID:22004668

Tagiev, B G; Tagiev, O B; Asadullayeva, S G; Mamedova, I A ^[1]

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1. National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

The dependence of the absorption coefficient on incident photon energy in a MnGa{sub 2}Se{sub 4} single crystal has been investigated in the temperature range 110-295 K. Using group-theory analysis of the electron state symmetry and comparison of the symmetry of the energy spectrum of MnGa{sub 2}Se{sub 4} and its isoelectronic analogs, a conclusion about the character of optical transitions has been drawn. It is shown that the features observed at 2.31 and 2.45 eV are related to the intracenter transitions {sup 6}A{sub 1}{sup 1} {yields} {sup 4}T{sub 2}({sup 4}G) and {sup 6}A{sub 1}{sup 2} {yields} {sup 4}T{sub 2}({sup 4}G). The {sup 6}A{sub 1} state is split by the crystal field.

• OSTI ID: 22004668
• Journal Information: Semiconductors, Vol. 46, Issue 6; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
CRYSTAL FIELD
ENERGY SPECTRA
GROUP THEORY
MONOCRYSTALS
TEMPERATURE RANGE